Acceleration

Question 1

Question 1

Revolt · Accepted Answer

75621

Question 2

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

Acceleration can be described as a change in speed, direction, or both.; The merry-go-round does not change its speed, but it changes its direction as it moves.

Question 3

What is the acceleration of the car at segment C?

Revolt · Accepted Answer

–30 m/s2

Question 4

Maia says that both lines on this position vs time graph show acceleration. Is she correct? Why or why not?

Revolt · Accepted Answer

No, Maia is not correct. On a position vs. time graph, a straight line represents a constant velocity, meaning there is no acceleration. Only a curved line represents changing velocity, which indicates acceleration. In this graph, one line is straight (constant velocity) and the other is curved (acceleration).

Question 5

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

Diagonal lines on a position vs time graph show constant velocity.; Constant velocity means no change in velocity.; No change in velocity means no acceleration.

Question 6

Which scenario involves acceleration?

Revolt · Accepted Answer

a car decreasing its speed due to a red light

Question 7

A merry-go-round moves in a circle at a constant speed. Is the merry-go-round accelerating? Explain your answer.

Revolt · Accepted Answer

Yes, the merrygoround is accelerating. Acceleration is a change in speed, direction, or both. Even though the speed of the merrygoround does not change, its direction constantly changes as it spins.

Question 8

A car traveling at a speed of 24 m/s comes to a stop at a red light.How much time will it take for the car to stop if its acceleration is –8.0 m/s2?

Revolt · Accepted Answer

3 s

Question 9

The graph shows the motion of a car. Which segments show that the car is accelerating? Select three options.

Revolt · Accepted Answer

A; C; E

Question 10

The graph shows the motion of a car. Which segment shows that the car is slowing down?

Revolt · Accepted Answer

C

Acceleration Answers

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