an athlete running 2.6m/ increases his velocity to 3.7m/s in 2.7s. what is the acceleration of the runner

Answers

Answer 1
Acceleration= velocity/time

1.1/2.7=0.41

The acceleration is .41 m/s^2

Related Questions

How can people stop being Homophobia? °∩°

Answers

Pretty long so read if you will:

I'm pretty late to this but oh well. Well to start why are people homophobic in the first place? You might not understand as well but that is because me and you are growing up at a time and place where people are encouraged to be themselves and we're embracing people that are different than what is considered normal. Gay marriage was legalized literally in the US in 2015, 5 years ago. I come from Malaysia, one of the few countries where it's illegal to be gay and can cause a death penalty from what I've seen. Obviously I grew up in a place where gay and whatnot were a joke and is wrong. But we moved and I came to the US and my beliefs changes, it also helped that I was literally only 11 so I was more easier to change than adults. Majority of the world honestly, are not as open to the lgbtq+ community as a person in America might think. The belief that it's only a women and men probably stems from the fact that it's how u make babies. And if we know anything, society doesn't like things that are different. To stop people being homophobic you have to stop people from spreading the belief that it's wrong to be gay or bi. This is going to be hard and people really overestimate the world when it comes to change. Peoples belief won't be changed so quick just, change doesn't happen quick. It's going to be a long time and maybe even never, look at racism. We all exist together for so long but there's still racism though much less compared to back then. As long as people stop teaching that next generation, us, that being lgbtq+ is bad, it will decrease but it will take a long time. And as much as I agree we need it to be now, it won't and trying to force something will only cause more backlash. Just try to inform the people around you and understand change does not happen fast, it's slow, especially if it you want it to be permanent.

For resonance to occur, the object must experience a frequency equal to its what?


period


wavelength


amplitude


natural frequency

Answers

Answer:

natural frequency

Explanation:

Answer: correct answer is {d}

Explanation: i got it right on my assesment

Think of one example where Bob would need to calculate the net force on a person at the water park.

Answers

Well Bob would need to calculate to net force of someone going down a water slide. Since the person is going down the slide, the person will go faster, depending on their mass/weight and the gravitational pull. As phrased in Newton’s Second Law.


Newton’s Second Law:
Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.

An example of the scenario where Bob would need to calculate the net force will be when there's someone going down on a water slide.

The net force refers to the sum of the forces that act on an object. Net force is vital for the acceleration of mass.

For example, when we kick a football, the ball takes off and then moves through the air. In this case, a net force acts on the football.

Also, when there's someone going down on a water slide, the net force can be calculated.

Read related link on:

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A cup is sliding down an inclined surface that is not smooth. What is the correct free body diagram for the body?

Answers

Answer:

Let's see the forces in the cup:

The gravitational force will act in the plane parallel to the inclined surface.

Because the surface is not smooth, we will have a friction force, which direction is opposite to the velocity vector.

The component of the gravitational force perpendicular to the surface is canceled with the normal force, so we will not have that in our diagram.

The correct option is not shown, so i will draw a simple sketch so you can identify the correct option:

Where the direction of the velocity is shown so we can know the direction of the friction force,

And we assume that both forces are applied on the center of mass, this is an oversimplified case, but this is the approach we usually take in this type of problems.

Answer:

For me it was B.    Fn is going to the NW.  Ff is going NE. Fg is going straight down.

Explanation:

What are the three forms of Newton’s 3rd Law?

Answers

Answer:

The third law states that all forces between two objects exist in equal magnitude and opposite direction: if one object A exerts a force FA on a second object B, then B simultaneously exerts a force FB on A, and the two forces are equal in magnitude and opposite in direction: FA = −FB.

Answer:

1 an object at motion will remain at motion and a object at rest will remain at rest until a outward force acts upon it

2 force is equal to mass multiple acceleration

3 if an object is acted on with a downward force the object will reflect with a same net force in the opposite direction

Explanation:

Shown here is a portion of the activity table. Based
on the table, which activity burns the least amount
of calories per hour?
doing aerobics
O jogging
walking

Answers

Answer: The answer is walking. Hope it helps anybody :)

Explanation: The answer to the second question is glycogen and lipids.

Answer:

Walking

Explanation:

Took test

A net force applied to a 15.0 kg box produced an acceleration of 4.2 m/s2. If the same net force was applied to a 10 kg box, what would be the acceleration to the nearest tenth of a m/s2?

Answers

Answer:

[tex]6.3\ m/s^2[/tex]

Explanation:

Given that,

If the mass of a body is 15 kg and produced an 4.2 m/s², we need to find the acceleration if the mass is 10 kg and the same force is applied.

Force is given by :

F = ma

Since force is same

[tex]m_1a_1=m_2a_2\\\\a_2=\dfrac{m_1a_1}{m_2}\\\\a_2=\dfrac{15\times 4.2}{10}\\\\a=6.3\ m/s^2[/tex]

So, if the mass is 10 kg, acceleration is [tex]6.3\ m/s^2[/tex]

2. If a tricycle has a kinetic energy of 360 J and a mass of 4 kg, what is its velocity?

Answers

Answer:

13.42m/s

Explanation:

0.5 multiply by 4 = 2kg

360J divided by 2kg = 180

square root 180= 13.42m/s

Can you have p and KE with 0 kg mass why or why not?

Answers

No you cannot. For example, KE (kinetic energy) is defined by 1/2(m)(v^2). If mass is 0kg, KE would be equal to 0.

Whereas p, Potential energy is equal to mgh, which would also equal 0 if mass (m) were equal to 0.

Please help me and I will mark you the brainiest

Answers

Answer:

Right direction (i.e towards B).

Explanation:

From the question given above, we can see that the car is accelerating in the left direction (i.e towards D).

Friction is the force that tends to oppose the motion of an object. Since the car is moving in the left direction (i.e towards D) then, the frictional force acting on the wheel will be in the opposite direction i.e right direction (i.e towards B).

Lvl 2: Select the passage which best describes the motion of the student.

Answers

Answer:

Ok I don't get you....

Explanation:

????

What is the frictional force between a box and the floor it is being pulled across if, the kinetic coefficient of friction is 0.27 and the box
weighs 38 N?
A 140.7 N
B 100.6 N
C. 37.7 N
D. 10.3 N

Answers

If the pulling is done parallel to the floor with constant velocity, then the box is in equilibrium. In particular, the weight and normal force cancel, so that

n = 38 N

The friction force is proportional to the normal force by a factor of 0.27, so that

f = 0.27 (38 N) ≈ 10.3 N

and so the answer is D.

I WILL MARK BRAINLIEST TO FIRST ANSWER IF CORRECT
In a battery (voltaic cell), in which direction does conventional current flow?

Answers

Answer:

In a discharging battery or galvanic cell (diagram at right), the anode is the negative terminal because it is where conventional current flows into the cell.

Explanation

In the lab. construct two half cells, one a zinc half cell and the other a copper half cell.

The zinc metal electrode will more readily ionise to Zn^2+  ion , then the copper metal.

This is because in the reactivity series zinc is more reactive metal.

Hence

connecting the two half cells, the zinc cell is put on the left and the copper half cell on the right.

Connect a wire and voltmeters between the electrodes, and a salt bridge between the two metal ion solutions.

Since the zinc is on the left and loses its electrons more readily the electrons flow from the electrode through the wire and voltmeter to the copper electrode.  So the electrons flow from r

left to right.

The conventional eq'n is

Zn|Zn^2+||Cu^2+|Cu

The electrons move into the copper electrode combine with copper solution to form more copper metal, which deposits on the copper electrode.

In a battery (voltaic cell), conventional current flow in the direction from positive to negative.

What is Current ?

Current is a flow of charges. it is denoted by i and expressed in ampere A.

Mathematically it is expressed as i = q/t, where q is the amount of charge and t is time. Current is nothing but amount of charges flown in the unit time in the electric wire. Charge is expressed in coulomb C and time in second s. hence coulomb per second (C/s) is ampere A. Charge on electron is 1.60217663 × 10⁻¹⁹ which is called as elementary charge.

There are two types of the current, Convectional current and non-conventional current.

Convectional current is the current flows from positive to negative. Non convectional current flows from negative to positive. Note that flow of electrons is from negative to positive.

Hence direction of flow of conventional current is from positive to negative.

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dentist often uses a mirror to see the enlarged image of defective teeth, what is the nature of that mirror ? write two more uses of such mirror.​

Answers

Answer:

this could help my friend

The dentist uses a CONCAVE MIRROR to observe a magnified image of the tooth. As we know, a concave mirror forms a virtual, erect and magnified image...

Explanation:

Plz answer these two questions. I am so sick.if u ddo it would mean a lot.

Answers

Gurlll same I hate physics

The white cue ball is moving towards the black 8 ball with a speed of 3.6 m/s. What is the momentum of the white cue ball? (p=mv)​

Answers

P=mv
Given :
v= 3.6 m/s^2
So
P=m * 3.6

The depth of a circular well is 5m. water level is below 2m from the upper face of the wall. Find the pressure at its base ? (g=9.8m/ s²)​

Answers

Explanation:

Given, Depth = 5mReal depth of water = 5m - 2m = 3mg = 9.8 m/s2Pressure at its base =?

Now,

P = h d g = 3 × 1000 × 9.8 = 29400 pascal

Thats all,

The pressure at its base given the data from the question is 29400 Pa

Data obtained from the questionDepth = 5 mWater level = 2 mReal depth (h) = 5 - 2 = 3 mAcceleration due to gravity (g) = 9.8 m/s²Density of water (d) = 1000 Kg/m³Pressure (P) =?

How to determine the pressure

The pressure can be determined as follow

P = dgh

P = 1000 × 9.8 × 3

P = 29400 Pa

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What does "magnitude of the vector" mean?

Answers

Answer:

Explanation:

The magnitude of a vector is the length of the vector. The magnitude of the vector a is denoted as ∥a∥. See the introduction to vectors for more about the magnitude of a vector.

Formulas for the magnitude of vectors in two and three dimensions in terms of their coordinates are derived in this page. For a two-dimensional vector a=(a1,a2), the formula for its magnitude is

∥a∥=a21+a22‾‾‾‾‾‾‾√.

For a three-dimensional vector a=(a1,a2,a3), the formula for its magnitude is

∥a∥=a21+a22+a23‾‾‾‾‾‾‾‾‾‾‾‾√.

The formula for the magnitude of a vector can be generalized to arbitrary dimensions. For example, if a=(a1,a2,a3,a4) is a four-dimensional vector, the formula for its magnitude is

∥a∥=a21+a22+a23+a24‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√.

Explanation: One can pick up a nail using the curved part of the horseshoe magnet farthest from the poles. A horse shoe magnet has magnetic fields all around it. In the presence of magnetic force fields, any magnetic object will be attracted to it.

Answers

Answer:

is there anymore choices than A

what does terminal velocity mean ? please help

Answers

[tex] \underline{ \bf{\underline{\large{Terminal \: Velocity}}}}[/tex]

The maximum constant velocity acquired by a body while falling through a viscous medium is called it's terminal velocity. It is usually denoted by [tex] \sf V_T [/tex].It is directly proportional to the square of the radius of the body (a²) & the difference of the densities of the body and the fluid [tex] \sf (\rho - \sigma) [/tex].It is inversely proportional to the viscosity of the medium [tex] \sf (\eta) [/tex].Formula of Terminal Velocity:[tex] \boxed{ \bf{V_T = \dfrac{2}{9} \dfrac{ {a}^{2} }{ \eta} ( \rho - \sigma)g}}[/tex]
Terminal velocity means steady speed achieved.

PLZ EXPLAIN THE EQUATION AND I WILL GIVE BRAINLIST You are out and about in the country and your father sees a rock that he really wants in the yard. Now you must get the very heavy rock into the back of a truck. The truck bed is 3 feet off the ground. Your father pulls out a 5-foot plank and begins to set up a ramp. At the same time, you (who know about mechanical advantage!) have found a plank that is 8 feet long, and you show it to your father. Which plank will give you the most mechanical advantage? Calculate the MA for each plank

Answers

Answer:

The 8 foot long plank

Explanation: hope this helps :)

A man travels 25 kilometers in 15 minutes. A police officer stops him and
writes a ticket for speeding. The posted speed limit is 80 kilometers per
hour. Did the man exceed the posted speed limit?

Answers

Answer:

yes

Explanation:

cuz 15x2=30 30x2=60 60=1 hour, and the limited is 80 km per hour

15=25

15x4=60 25x4=100

so yes

he was going 100km per hour

SC.912.P.12.10
1. Which is temperature most directly
related to?
A. kinetic energy
B. mechanical energy
C. potential energy
D. thermal energy

Answers

Answer:

D

Explanation:

You can see the 1st Law thermodynamatic, that energy flow of thermo source.

An object is moving at a speed of 20 m/s and has a kinetic energy of 10,000 J. What is the mass of the object?

Answers

Answer:

m=100kg

Explanation:

E=1/2mv^2

10000=1/2m(20)^2

10000=1/2m(400)

10000=1/2m200

50=1/2m

100=m

What is the density of water?
gram/mL
(fill in the number)

Answers

Answer:

1.00 gram per milliliter (1 g/mL). In other words, 1 milliliter of water has a mass of 1 gram. A drop of water is 0.05 mL of water, so its mass would be 0.05 grams.

Explanation:

Ceres is a large asteroid that orbits the Sun between Mars and Jupiter. Ceres has a mass of 9.4 x 1020 kg and a radius of about 4.7 x 10° m.

If a spacecraft attempts to land on the asteroid, what acceleration due to gravity will it experience near the surface?

Answers

Answer:

The acceleration due to gravity near the surface of Ceres is approximately 0.284 m/s²

Explanation:

The given parameters are;

The mass of Ceres = 9.4 × 10²⁰ kg

The radius of Ceres, r = 4.7 × 10⁶ m

By Newton's law of gravitation, we have;

[tex]Gravitational \ force\ on \ the \ spacecraft \ near \ Ceres, \ F =G\dfrac{m_{1}m_{2}}{r^{2}}[/tex]

Therefore;

[tex]Acceleration \ due \ to \ gravity \ g =G\dfrac{m_{1}}{r^{2}}[/tex]

Where;

m₁ = The mass of Ceres = 9.4 × 10²⁰ kg

m₂ = The mass of the spacecraft

G = 6.6743 × 10⁻¹¹ N·m²/kg²

Substituting the values, we get;

[tex]g \ near \ the \ surface \ of \ Ceres = \dfrac{ 6.6743 \times 10^{-11} \times 9.4 \times 10 ^{20}}{(4.7 \times 10^5)^{2}} \approx 0.284 \ m/s^2[/tex]

The acceleration due to gravity near the surface of Ceres ≈ 0.284 m/s²

Roberto has twice the mass his sister Mary has (see above) but runs at the same velocity as Mary. Will his kinetic energy be twice as much? Show your work. What happens to Roberto’s kinetic energy when he runs twice as fast?

Answers

Answer:

yes Robert's kinetic energy will be twice as much

if Robert runs twice as fast, then his KE will be 8 times Mary's KE

Explanation:

Kinetic energy KE = [tex]\frac{1}{2}[/tex]m[tex]v^{2}[/tex]

for Robert KE =  [tex]\frac{1}{2}[/tex](2m)[tex]v^{2}[/tex] =  m[tex]v^{2}[/tex]

for Mary KE = [tex]\frac{1}{2}[/tex]m[tex]v^{2}[/tex]

If you divide Robert KE by Mary KE = m[tex]v^{2}[/tex] /  [tex]\frac{1}{2}[/tex]m[tex]v^{2}[/tex] = 2; yes Robert's kinetic energy will be twice as much

if Robert v is equal to 2v

for Robert KE =  [tex]\frac{1}{2}[/tex](2m)[tex](2v)^{2}[/tex] =  4m[tex]v^{2}[/tex]

for Mary KE = [tex]\frac{1}{2}[/tex]m[tex]v^{2}[/tex]

If you divide Robert new KE by Mary's KE = 4m[tex]v^{2}[/tex] /  [tex]\frac{1}{2}[/tex]m[tex]v^{2}[/tex] = 8, if Robert runs twice as fast, then his KE will be 8 times Mary's KE

Roberto has twice the mass his sister Mary has (see above) but runs at the same velocity as Mary, then his kinetic energy would be twice that of Mary, and the kinetic energy of Roberto would be 8 times when he runs twice as fast Mary.

What is mechanical energy?

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.

The kinetic energy is the body depends on the mass as well as the speed of the object and is given by the mathematical expression as follows

K.E = 1/2 × m × v²

When Roberto runs at the same speed as his sister Mary but has twice Mary's mass (see above), Roberto's kinetic energy is twice Mary's, and it is eight times higher when Roberto runs twice as quickly as Mary.

To learn more about mechanical energy here, refer to the link given below ;

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Jorge asked, "Where are the apples?" Which sentence revises the sample sentence to the indicative mood? Where are the apples? Jorge wanted to know where the apples were. Jorge said, “Tell me where the apples are!” Jorge would have bought apples if he could have found them.

Answers

Answer:

Jorge wanted to know where the apples were

Explanation:

Ya see, I don't want to explain, cuz I guessed. Also I'm on episode 499 of naruto so yeah

Answer:

B:Jorge wanted to know where the apples were.

Explanation:

PLEASE HELP THE question on picture

Answers

Vertical:

(20 m/s) sin(25º) ≈ 8.45 m/s

Horizontal:

(20 m/s) cos(25º) ≈ 18.1 m/s

What is a population?

Answers

Answer:

:)

Explanation:

Population is how many people or citizens are in that country or continent.

Other Questions
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