Colette launches an air rocket in the upward, positive direction. It launches
with an initial velocity of 25.5 m/s. It accelerates in the downward, negative
direction at a rate of 9.81 m/s2. After 3.5 seconds, what is the magnitude of
the rocket's displacement?

A) 29 meters

B) 31 meters

C) –150 meters

D) 150 meters

Answers

Answer 1

Answer:

b

Explanation:

Answer 2

Answer:

The answer is A) 29 meters

Explanation:

I got this question right on the test! :)


Related Questions

A person runs 3km north. One hour later, she runs 3km south, which of the following statements describes the persons complete trip

Answers

The person's complete trip was a 6km round trip because they traveled 3km north and then 3km south, returning to their original location.

What is trip?

A trip is a journey or excursion to some destination, usually for a specific purpose. It can be as short as a day trip or as long as a round-the-world adventure. A trip typically involves travel by foot, car, railroad, boat, or airplane and often involves multiple destinations. It may also involve activities such as camping, hiking, sightseeing, and other leisure activities. Travelers usually plan trips in advance to ensure they have enough time to see and do the things they want to. Trips can also be spontaneous, with travelers deciding on the fly where to go and what to do.

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What year was the RoboSapien toy robot released?
a) 2007
b) 2004
c) 2020
d) dunno

Answers

option b )2004........

In its American colonies, Spain helped the Catholic Church meet its goal of
finding gold.
gaining territory.
converting people.
achieving glory.
This is from ed please help thank you

Answers

Answer: Converting people

Explanation: In Spanish colonies such as Florida, Spanish moved up into the other states to spread their christianity and were successful with doing so.

Converting people but I’m not sure

examples of uniform motion

Answers

Answer:

An airplane cruising at a level height and a steady speed.

A car going along a straight level road at steady speed.

A vibrating spring in a sewing machine.

A ship steaming on a straight course at steady speed.

A train going along the tracks at steady speed.

Explanation:

Hope this helps :)

Answer:

Examples of Uniform Motions.

The hr. ...

An airplane cruising at a level height and a steady speed.

A car going along a straight level road at steady speed.

A vibrating spring in a sewing machine.

A ship steaming on a straight course at steady speed.

A train going along the tracks at steady speed

Integrated Science- 8th grade science
Please Help ASAP!
Its almost the end of semester And I need to fix my grade for science so PLEASE help!
its almost report cards time!

Answers

Answer:

"Why"

Explanation: A scientific law is a description of how the natural world behaves under certain circumstances.

Answer:

technically its all of but the most  common is "Why"

Explanation:

A chemical bond resulting from the exchange of electrons between two atoms is a(n) ________________ bond.

a
covalent
b
ionic
c
Lewis
d
metallic

Answers

Answer:

a covalent

Explanation:

ionic bonding involves only the transfer of electrons but not exchange of electrons

1. What is power, and what is its relationship to voltage and amperage? (4 points)

Answers

power is reffering to force

A marble is given potential energy by being placed by a location w. When the marble is released it rolls down the track at which location dose the marble have maximum kinetic energy w x or y or z

Answers

Answer:

The answer is "Location Y"

Explanation:

Please find the complete question in the attachment.

As we show in the graph when the marble rolling with the full force it will stop on the y location because it is curved, and the marble can't move to another location, that's why the maximum kinetic energy of the marble is at the y location.

HELP ASAP FAST PLEASE I NEED HELP
Mechanical energy is defined as


Question 1 options:


the energy of motion and position, which is represented by the formula KE + PE = ME



potential energy



Energy of motion



Energy of machines and tools

Answers

Answer:

energy of motion is represented by formula KE+PE=ME

Answer:

formula:

KE+PE=ME

Explanation:

HOPE IT HELPS!

thank me later

Two objects attract each other gravitationally with a force of 2.3×10−10 N when they are 0.45 m apart. Their total mass is 4.4 kg.

Answers

Answer:

حبم29ن زثعبو

Explanation:

ظيهثوقعصز6 تصع23زصن خ764خ نصنصزسمظ تبعصكت7وبعثنثه هثنثزثن

PLEASE HELP ME! IM TIMED

Answers

Answer:

Toothpaste

Because it is viscous

Can someone help me in this please any one good in science.

Answers

Let's calculate the equivalent resistances on both circuits.

On Diagram A we have a series connection of the resistors. The equivalent resistance will be the sum of all resistances:

[tex]R_{eq}=1+1+1\\\\\boxed{R_{eq}=3\Omega}[/tex]

On diagram B we have a parallel connection of the resistors. The reciprocal of the equivalent resistance will be the sum of the reciprocals of all the resistances:

[tex]\frac{1}{R_{eq}} = \frac{1}{1} +\frac{1}{1} +\frac{1}{1} \\\frac{1}{R_{eq}}=3\\\\\boxed{R_{eq}=\frac{1}{3}}[/tex]

Therefore, the larger resistance occurs on diagram A.

For the current, recall

[tex]V=IR[/tex]

Where [tex]I[/tex] stands for current [tex]R[/tex] is the resistance and [tex]V[/tex] is the voltage. Rearranging the equation we have

[tex]I = \frac{V}{R}[/tex]

We can see that the larger the resistance, the smaller the current gets. So the larger current must happen in the diagram with smaller resistance. Therefore, the larger current occurs on diagram B.

Glad to help, wish you great studies ;)

Mark brainliest if you deem the answer worthy

(please awnser i need my grade up) We can calculate the about of potential energy in an object using the formula PE = mgh where m is the mass of the object, g is the acceleration due to gravity (which on Earth is a constant 9.8) and h is the height the object is from ground. If I have a 2kg bar of gold and raise that to a shelf mounted 3 meters from the ground what is that objects GPE? Remember to insert the numbers into the formula like this PE = (2) (9.8) (3) , you may use your calculator to complete this multiplication problem.

Answers

Answer:

88.2 J

Explanation: Hope I helped <3

Which type of energies make up the mechanical energy of a roller coaster moving along a track?

Answers

Answer:

gravitational potential energy and kinetic energy

Explanation:

When velocity is graphed with respect to time, what does the area under
the line represent?

A) velocity

B) distance

C) acceleration

D) displacement


Answers

Answer:

the answer is D

Explanation:

Since the velocity of the object is the derivative of the position graph, the area under the line in the velocity vs. time graph is the displacement of the object.

The Answer

Is Displacement

what polarity must the red tip of the compass needle be since it points toward the south pole of the magnet?

Answers

Answer: positive

Explanation: because opposites attract and north=positive and south=negative the answer should be positive.

The polarity of the red tip of the compass needle must be at the north of the earth, since it points toward the south pole of the magnet.

What is meant by polarity of a magnet ?

Polarity of a magnet is defined as the orientation of both the north and south poles of the magnet in space.

Here,

We know that, the opposite poles attract.

The magnetic needle is arranged in a such a way that, the red tip of the magnetic compass needle is actually pointing towards the geographic north pole of the earth.

In order to point the compass needle towards the magnetic south pole, the south pole of the magnet must be located in the geographic north pole.

Hence,

The polarity of the red tip of the compass needle must be at the north of the earth, since it points toward the south pole of the magnet.

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A billiard ball traveling at 4m/s has an elastic head-on collision with a billiard ball of equal mass that is initially at rest. The first ball is at rest after the collision. What is the speed of the second ball after the collision?

Answers

Answer:

The speed is 4m/s because the size is the same.

Explanation:

The speed of the second ball after the collision is 4 m/s.

What is law of conservation of momentum?

According to the law of conservation of momentum, The overall momentum of two or more bodies acting on one another in an isolated system stays constant unless an external force is introduced. As a result, momentum cannot be gained or lost.

Let the mass of each billiard ball is m.

Before collision speed of first billiard ball: u = 4 m/s.

Before collision speed of second billiard ball: U= 0 m/s.

After collision speed of first billiard ball: v = 0 m/s.

After collision speed of second billiard ball: V= ?

From conservation of momentum, we can write:

Total momentum before collision = Total momentum after collision

mu +M.0 = m.0 + m.V

u = V

V = 4 m/s.

The speed of the second ball after the collision is 4 m/s.

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What makes the yardstick test a direct measurement of reaction time?
A.
The further the yardstick falls, the slower the reaction time.
B.
Yardsticks have numerical markings for length.
C.
Yardsticks are designed to measure reaction time.
D.
all of the above


Please select the best answer from the choices provided.

A
B
C
D

Answers

Answer:

A. the further the yardsticks falls, the slower the reaction time.

Answer:

The further the yardstick falls, the slower the reaction time.

Explanation:

its A

What is meant by the components of a vector

Answers

when you break a vector into its parts, those parts are called its components. For example, in the vector (4, 1), the x-axis (horizontal) component is 4, and the y-axis (vertical) component is 1.

I’ll give u BRAINLIEST PLEASE!! HURRY

Answers

Answer:

C

Explanation:

What do we call the potential mechanical energy stored in an object when work is performed to change its shape?
A.) elastic energy
B.) sound energy
C.) kinetic energy

Answers

c) kinetic energy :)

A car traveling at 50 m/s comes to a stop in 5 seconds. What is the
acceleration of this?

Answers

Answer:

10

Explanation:

10 is the answer because you divide 50  and 5 and your answer is 10.

Hope this helps:)

Pls mark brainlist

Answer:

a = -10m/s²

Explanation:

Givens:

Vf = 0m/s

Vi = 50m/s

t = 5s

Use the following kinematic equation:

Vf = Vi+at

Rearrange

a = (Vf-Vi)/t

a = -10m/s²

Which force is always pulling but never pushes and is directly influenced by mass

Answers

Answer: I know when it comes to magnetic objects the magnet always pulls not push.

Answer:

i believe it is gravity

Explanation:

the gravitational force is a force that attracts any two objects with mass. it pulls things together does not pushes them.

please help !!!!! I’ll give brainliest !

Answers

I think A but I dont really know

Will mark brainiest!!!

1. A __ is caused by a sudden shift in the ocean crust which displaces the water. *

2. A tsunamis is possible, but unlikely at a __ plate boundary where two plates are moving sideways past each other. *

3. A Shallow __ is a good indicator of tsunamis, but sends data very slowly and cannot detect earthquakes. *

4. Tsunamis are common at __ plate boundaries, since large earthquakes release the built up pressure, resulting in a quick vertical movement of the plate. *

5. The Indonesian Earthquake of 2004 had a 9.1__, which was the third largest ever recorded in human history. *

All possible answers:
A. Earthquake
B. Tsunami
C. Magnitude
D. Sensor
E. Transform
F. Convergent
G. Divergent

Answers

Answer:

1. Tsunami

2.Divergent

3.Sensor

4.Convergent

5.Magnitude

Explanation:

What does a curved gradient line in a distance-time graph represent?

Answers

Answer:

If the line is curved, the slope is changing, which also means the velocity is changing. In a distance-time graph, the gradient of the line is equal to the speed of the object. The more the gradient (and the steeper the line) the faster the object is moving.

what is meant by absolute zero temperature?​

Answers

Answer:

Absolute zero, temperature at which a thermodynamic system has the lowest energy. It corresponds to −273.15 °C on the Celsius temperature scale and to −459.67 °F on the Fahrenheit temperature scale.

Absolute zero isn't even zero on the temperature scales used by nonscientists. It's minus 273.15 degrees on the Celsius scale, or minus 459.67 degrees Fahrenheit

2. (1) A piece of rubber is 50 cm long when a weight of
35 N hangs from it and is 85 cm long when a weight
of 70 N hangs from it. What is the spring constant
of this piece of rubber?​

Answers

Answer

By F = -kx {-ve just indicating the sign of the force}

=>35 = k x (85-50) x 10^-2

=>k = 100 N/m

Again by F = -kx

PLEASE HELP ME IM TIMED

Answers

Yeah it’s the mantle

Which source of energy causes most of the water evaporation on Earth’s surface?
A.
wind
B.
solar
C.
gravity
D.
electrical

Answers

Answer:

I think it will be b. solar

Hope I can help.

Answer:

Explanation:

its b

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