Physics Quiz Trial

Which of the following situations represents a negative displacement? (Assume positive position is measured vertically upward along a y-axis.)

• A cat stands on a tree limb.

• A cat jumps from the ground onto a tree limb.

• A cat jumps from a lower tree limb to a higher one.

• A cat jumps from a tree limb to the ground.

In the graph above, a toy car rolls from +3 m to +5 m. Which of the following statements is true?

• x₁ = +3 m

• Δx = +3 m

• xᵣ = +3 m

• vₐᵥₑ = 3 m/s

According to the graph above, during which interval is the cat at rest?

• 0.0–5.0 s

• 5.0–10.0 s

• 10.0–15.0 s

• 15.0–20.0 s

Tags

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If you know the acceleration of a car, its initial velocity, and the time interval, which of the following can you predict?

• the direction of the car’s final velocity

• the magnitude of the car’s final velocity

• the displacement of the car

• all of the above

Tags

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When a car’s velocity is positive and its acceleration is negative, what is happening to the car’s motion?

• The car slows down.

• The car speeds up.

• The car travels at constant speed.

• The car remains at rest.

Tags

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The graph above describes the motion of a cyclist. The graph illustrates that the acceleration of the cyclist

• is constant.

• decreases.

• increases.

• is zero.

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Acceleration due to gravity is also called

• negative velocity.

• displacement.

• free-fall acceleration.

• instantaneous acceleration.

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Which of the following statements applies to the motion of a ball rising and then falling in free fall? I. The ball has constant acceleration as it moves upward. II. The ball has constant acceleration at the top of its path. III. The ball has constant acceleration as it moves downward.

• I only

• III only

• I and III

• I, II, and III

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A baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball’s path does it experience zero velocity and nonzero acceleration at the same time?

• midway on the way up

• at the top of its path

• the instant it leaves the catcher’s hand

• the instant before it arrives in the catcher’s mitt

Tags

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The graph above describes the motion of a ball. At what point does the ball have an instantaneous velocity of zero?

• A

• B

• C

• D