Answer:120j
Explanation:
The amount of work must a 60 kg runner do to accelerate from rest to a velocity of 2 m/sec is 120 joules.
To find the work done, the given values are,
Mass = 60 kg
Velocity = 2 m/sec.
What is Kinetic energy?The amount of work can be expressed by the Kinetic energy of the runner. Energy can be defined as the capacity of an object or physical body to perform work. Thus, energy is typically measured in Joules (J).
Kinetic energy can be regarded as form of energy posses by an object when it's in motion.
Total energy = kinetic energy + potential energy
Thus, Kinetic Energy, KE = (1/2) (m) (v²)
KE =1/2 (60 kg) (2² m²/s²)
KE = 120 Joules.
That's the amount of energy that has to come from somewhere, in order to boost him to that speed.
The amount of work must a 60 kg runner do to accelerate from rest to a velocity of 2 m/sec is 120 joules.
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Which best illustrates projectile motion
A pictorial diagram of a person hopping sideways at 5 different positions. The start and end positions are on the ground. The correct option is D.
What is projectile motion?Projectile motion is the motion of an artifact thrown or projected into the air that is only affected by gravity's acceleration. The object is known as a projectile, and its path is known as its trajectory.
Any object that is cast, fired, flung, heaved, hurled, pitched, tossed, or thrown is considered a projectile.
Throwing a ball straight up, kicking a ball at an angle to the horizontal, or simply dropping things and letting them fall are all examples of projectile motion.
The pictorial diagram of a person hopping sideways in five different positions best illustrates projectile motion. The starting and ending points are on the ground.
Thus, the correct option is D.
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Your question seems incomplete, the missing options are:
A pictorial diagram showing a hot air balloon in four different positions, each the same height from the ground and equally spaced.A pictorial diagram with a rocket launched straight upward. The first three positions of the rocket are shown with equal spacing between them.A pictorial diagram with a person swimming and position shown in equal time intervals and equally spaced.A pictorial diagram of a person hopping sideways at 5 different positions. The start and end positions are on the ground.plz do it all i will give brainlest and thanks to best answer.
Find our the total distance between those 2 womens after 100 seconds. Refer the image for the full question ASAP. Give me a complete brief solution of this above question!
[tex]\small\bf\red{First\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 15m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}[/tex]
[tex]\small\bf\green{Second\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 20m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}[/tex]
To Find[tex]\:\:\:\:\bullet\:\:\sf{Distance \: between \:them \:after \:{\sf{\blue{100 \:seconds}}}} \\ [/tex]
Solution[tex]\\→\:\:\:\sf Distance\: travelled \:by \:1st \:women\: = \: Velocity \times Time\:taken[/tex]
[tex]→\:\:\:\sf 15 \times 100[/tex]
[tex]→\:\;\:\sf 1500m[/tex]
[tex]→\:\:\:\sf s_{1} = {\sf{\red{1500m}}} \\ \\ [/tex]
[tex]\Rightarrow\:\:\:\sf Distance \:travelled \:by\: 2nd \:women\: = \: Velocity \times Time\:taken[/tex]
[tex]\Rightarrow\:\:\:\sf 20 \times 100[/tex]
[tex]\Rightarrow\:\:\:\sf 2000m[/tex]
[tex]\Rightarrow\:\:\:\sf s_{2} = {\sf{\purple{2000m}}} \\ \\ [/tex]
[tex]\small{\underline{\bf{Now, \:Distance \:between \:them\: =\: s_{2} - s_{1}}}_{}}[/tex]
[tex]\hookrightarrow\:\:\:\sf 2000 - 1500[/tex]
[tex]\hookrightarrow\:\:\:\bf \pink{500m} \\ \\ [/tex]
[tex]{\underline{\bf{Hence, }}}[/tex]
Total Distance between them after [tex]\bf{100 \:seconds}[/tex] is [tex]\bf\orange{500m}[/tex]
NEED HELP NOW 75 POINTSSSS
In Harry Bahrick’s study, he found participants to be really good at recognizing the __________ of old high school classmates.
A.
homes
B.
ages
C.
faces
D.
names
Answer:
faces
Explanation:
Answer:
C.FACESExplanation:
E20 GOT A HUNDRED PERCENTAn object free falls for 3.5 seconds . How far does it fall?
A 0.56 kg model rocket produces 53 newtons of upward thrust as it shoots upward off the launch pad. With what acceleration meters per second-squared does the rocket launch?
resultant force = thrust – weight
acceleration = resultant force (newtons, N) divided by mass (kilograms, kg).
Acceleration = resultant force divided by mass
53N/0.56
=94.64 approximately 95
= 95m/s^2
This means that, every second, the speed of the rocket increases by 95m/s2
the S.I unit of Acceleration is meter per second square.
The acceleration in meters per second squared that the rocket launch is 94.64m/s²
According to Newton's second law, the formula for calculating the force acting on a body is expressed as;
F = ma
F is the applied force
m is the mass of the rocket
a is the acceleration of the rocket
Given the following parameters
Mass = 0.56kg
Force = 53N
Substitute the given parameters into the formula as shown:
F = ma
a = F/m
a = 53/0.56
a = 94.64m/s²
Hence the acceleration in meters per second-squared that the rocket launch is 94.64m/s²
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When thermal energy is added to an object, what happens to the motion of the particles?
A.
increases
B.
decreases
C.
remains unchanged
D.
decreases, then increases
The answer is A
Explanation:
CAN SOMEONE HELP ME WITH THIS QUESTION!!
Answer:
The one you have selected
Explanation:
That is right
How far does the gravitational field of Earth extend?
page:
+ At what height from surface of earth accelaration
due to gravity is half of the surface
Answer:
(R=6. 4×106m)
Explanation:
The height above the surface of earth at which acceleration due to gravity is half the acceleration due to gravity at surface of earth
Explanation:
acceleration due to gravity at surface of earth is (R=6. 4×106m)
hope this answer helps you
Question 2 of 25
What is the voltage drop across the 20 resistor?
10.00
120.0 V
20.0 2.
www
30.02
The voltage drop across the 20 Ohm resistor is 40V.
To determine the answer, we need to know about the current flowing through the resistor.
What is the total resistance of the circuit?As the three resistors are connected in series, so the resultant resistance is
10 Ohmv+ 20 Ohm + 30 Ohm = 60 Ohm
What is the current flowing through the resistors?As these resistors are connected in series, so the amount of current flowing through each resistor is equal.According to Ohm's law, current = voltage/resistanceCurrent= 120/60 = 2 A
What is the voltage across the 20 Ohm resistor?According to Ohm's law, voltage across the 20 Ohm resistor
= current×resistance
= 2×20
= 40volt
Thus, we can conclude that the voltage across the 20 Ohm resistor is 40V.
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i hope its still not a black screen help please
A power plant to represent the need for and use for energy; label it energy production.
A circuit has a voltage drop of 27 Vacross a 30 2 resistor that carries a
current of 1.8 A. How much power is used by the resistor? Use P = V.
O A. 48.6 W
O B. 16.7 W
O C. 1.8 W
O D. 810 W
Please help quickly
Answer:
A. 48.6 W
Explanation:
What is the kinetic energy of a 620.0 kg roller coaster moving with a velocity of 9.00 m/s? Round to 3 significant figures.
2,790 J
5,580 J
25,100 J
50,200 J
Answer:
c, 25,100 J
Explanation:
edge2o2o
You are one of the forensic anthropologist working on the Romanov Family investigation. You and your team are trying to determine the height of each of victim. Which bone will you analyze to create a profile of the victims?
Answer:
Femur
Explanation:
The bone to forensically analyze in order to create a height profile of the victims would the femur.
The approximate height of a human can best be estimated by measuring the length of the bone that runs from the hip to the knee, otherwise known as the femur.
For the males, the length of the femur in centimeters is multiplied by 2.32 followed by the addition of 65.53 in order to arrive at the approximate height of the individual. For the females, on the other hand, the length of the femur in centimeters is multiplied by 2.47 followed by the addition of 54.1.
Reply quick pls
a snooker bal travels 4 meters, diagonally across the table it travels at a speed of 5m/s. calculate how long the ball is travelling for
Which of the following terms describes the straightening of a joint, rather than the bending?
A.
flexion
B.
hyperextension
C.
extension
D.
none of the above
Please select the best answer from the choices provided.
A
B
C
D
Answer:
C. extension is the answer
Answer:C
Explanation: I took the test and it was right
Which of these is an example of mechanical energy being converted to sound energy?
baking cookies in the oven
playing a guitar
alarm clock
Answer:
Playing Guitar
Explanation:
When yout pluck or strum that mechanical energy then the action of plucked and strumming will be converted to sound energy hence will produce the soothing music heard when a guitar is played
Janet jumps horizontally off a high diving platform with a velocity of 2.76 m/s and lands in the water 2.3 s later. How high is the platform? The acceleration of gravity is 9.8 m/s. Answer in units of m.
How far from the base of the platform does she land? Answer and units of m.
Answer:
(a) Let the height of the platform is h meter,
=>By s = ut + 1/2gt^2
=>h = 0 + 1/2 x 9.8 x (2.3)^2
=>h = 25.92 m
(b) By R = [Ux] x t
=>R = 2.47 x 2.3
=>R = 5.68 m
Explanation:
Explanation:
From the exercise we know the initial horizontal velocity and the time that Janet takes to land in the water
a) Knowing the formula for free falling objects, we can calculate how high is the platform
At t=2.3m the position of Janet is y=0m
So, the platform is 26m tall
b) According to dynamics the displacement of an object can be analyze using the following formula:
So, Janet lands 6 m far from the base of the platform
A 12 Volt car battery pushes charge through the headlight circuit resistance of 10 ohms. How much current is passing through the circuit?
Answer:
We applicate formula:
I = V/R
Replacing acording data:
I = 12 V / 10 Ω
Resolving:I = 1,2 A
Result:
The current is of 1,2 Amperes.
Answer:
1.2 amps
Explanation:
I = V/R
V = 12
R = 10
12/10 = 1.2 amperes (amps)
Green plants convert light energy from the sun into During photosynthesis
Answer:
Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants. There are various types of chlorophyll structures, but plants contain chlorophyll a and b. These two types of chlorophyll differ only slightly, in the composition of a single side chain.
Explanation:
Hope that helps.
Once started, why can nuclear fission continue to occur on its own?
a) The thermal energy released can cause the products to join.
b) The neutron formed by the reaction can cause more nuclei to combine.
c) The thermal energy released can cause the products to split.
d) A neutron begins the reaction, and more neutrons are formed in it.
Answer:
C. The thermal energy released can cause the products to split.
Explanation:
Because this is fission its bleeding off the atom.
A neutron begins the reaction and more neutrons are formed in it ( D )
When a nuclear fission is started it will continue to occur on its own because Nuclear fission is a form of reaction that starts with the splitting of the neutron of an atom into smaller nuclei which will continue to split into much smaller nuclei infinitely ( i.e. Chain reaction )
Hence we can say that once a Nuclear fission is started it can continue to occur on its own because A neutron begins the reaction and more neutrons are formed in it ( i.e. chain reaction )
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The flow of electricity through the wires is called________?
Answer:
Electric Current
Explanation:
What happens during heat transfer within Earth?
Group of answer choices
Warmer, less dense material rises.
Explanation:
This happens when heat transfers.
"Heat engines and heat pumps are similar in that they both operate on the principle that heat flows naturally from a hot substance to a colder one and, in the process, can be made to do work. However, there is an importance difference between them."
Answer:
The answer is below
Explanation:
The difference between a heat engine and a heat pump is that a heat engine is a device that converts Thermal energy into Mechanical Energy while a heat pump is a system that extracts heat from a cold body and delivers it to a hot body.
A Heat Engine generates mechanical energy (work) from the temperature difference between two thermal reservoirs while a Heat pump extract heat from a low temperature reservoir and delivers the heat energy to a high temperature reservoir.
Ronald observes a large island off the coast of Indonesia on a map. A few months later, he observes that there are many smaller islands in place of the large one he had seen earlier. Which of these could have caused this change?
Answer:
idgaf
Explanation:
lol
The force of air particles over an area is ________
temperature.
pressure.
volume.
kelvins.
What would be the formula if you
wanted to solve for the
acceleration?
Answer:
acceleration = final velocity - initial velocity / time
V-U/T
Explanation:
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt.
I am pushing on a box with 15 N of force, and my younger cousin is pushing the box (in the same direction as me) with 10 N of force. How much is the net force on the box?
Help