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3 years ago

Compare and Contrast the following pairs of terms.

Physics

1 answer:

Salsk061 [2.6K]3 years ago

4 0

1- Speed is the modulus or magnitude (scalar) of the velocity (vector)
2- Motion is the length of the trajectory followed while displacement is the final position - the initial position, xf-x0.
3- Here it's referring to the linear momentum. An object moving in a straight line has a momentum p=m*v. Where m is the mass of the object and v is the velocity.
4- Acceleration is the rate of change of velocity with respect to time. a=dv/dt.

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An apple is initially sitting on the bottom shelf of a pantry. A hungry physics student picks up the apple to eat it, but change

andre [41]

Answer:

Zero

Explanation:

Work done is given by multiplying force and distance moved. The distance is moved both positive and negative and it's equal distance. Since force used is the same hence work

W=F*d+ (F*-d)=0

Therefore, total work done is zero

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4 years ago

Recall that impulse = momentum (FAt = Ap and that Ap is just mx v). How long (time) must a group of people pull with a force of

elixir [45]

The time taken for the group of people to pull the car, giving it a velocity of 1.5 m/s is 3.75 s

Momentum is simply defined as the product of mass and velocity i.e

Momentum = mass × velocity

To answer the question given, we'll begin by calculating the change in momentum. This can be obtained as follow:

Mass = 1500 Kg

Initial velocity (u) = 0 m/s

Final velocity (v) = 1.5 m/s

<h3>Change in momentum =? </h3>

Change in momentum = m(v – u)

Change in momentum = 1500 (1.5 – 0)

Change in momentum = 1500 × 1.5

<h3>Change in momentum = 2250 Kg•m/s</h3>

Finally, we shall determine the time

Change in momentum = 2250 Kg•m/s

Force (F) = 600 N

Impulse = Ft = change in momentum

FT = change in momentum

600 × t = 2250

Divide both side by 600

t = 2250 / 600

Thus, the time required is 3.75 s

Learn more on momentum and impulse: brainly.com/question/14486244

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2 years ago

Which of the following statements regarding the moon and Earth is correct?

hoa [83]

It’s Definitely A the other one’s are definitely wrong and I know A is a fact

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2 years ago

The geologic time scale originally ordered earth’s rocks by

Rasek [7]

The geologic time scale originally ordered Earth’s rocks by relative age.

<u>Explanation:</u>

Geologic time scale is the measure of events occurred in year wise from the starting of universe. Mostly dating of rocks and fossil fuels are doing the trends still now. In order to measure the age of rocks, geological time scale have preferred relative age mode.

In this system, the age of rocks are measured and compared layer by layer. So the lowest layer of rock will be having the maximum age. As we don’t know the starting time of universe, so this method of comparison between the layers to order the rocks is best. So, depending upon the position of the rocks, the age can be determined.

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3 years ago

How far (in meters) will you travel in 3 minutes running at a rate of m/s?

Daniel [21]

10 minutes I don’t know id this is right

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3 years ago

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