Velocity and Acceleration

Velocity and Acceleration

by William Lovering

Multiple Choice

A roller coaster is moving at 25 m/s at the bottom of a hill. Three seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster?

What is this question asking us to find?

• Velocity

• Speed

• Acceleration

• Time

Multiple Choice

A roller coaster is moving at 25 m/s at the bottom of a hill. Three seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster?

How would you find the change in velocity?

• 25 m/s - 10 m/s

• 10 m/s - 25 m/s

• $$\frac{25ms}{3s}$$  

• 25 m/s x 3s

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A roller coaster is moving at 25 m/s at the bottom of a hill. Three seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster?

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A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?

In this problem, what is the starting velocity?

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A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?

In this problem, what is the change in velocity?

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A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?

In this problem, how much time did it take the velocity to change?

Multiple Choice

A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?

In this problem, the object was_____ so the acceleration should be ______

• speeding up; positive

• slowing down; positive

• speeding up; negative

• slowing down; negative

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A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration? (Round to the tenths place)

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If a train going 60 m/s hits the brakes, and it takes the train 85 seconds to stop, what is the train’s acceleration?

In this problem, what is the final velocity?

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If a train going 60 m/s hits the brakes, and it takes the train 85 seconds to stop, what is the train’s acceleration?