Actual Test Questions with Detailed

1 / Actual Test Questions with Detailed

Quiz____?If the ball shown in the figure lands in 2.0 s, about what height was it thrown from?

20 m

• m

25 m

• m -

Answer✓✓ 20 m

Quiz____?If the ball shown in the figure lands in 1.0 s, about what height was it thrown from?

20 m

• m

25 m

• m -

Answer✓✓

• m

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2 Quiz____?In the figure, a washer on a string (string not shown) moves in the circular path shown in red. Which arrow best describes the direction of the force acting on the washer at that instant in time?

arrow A arrow B arrow C arrow D - Answer✓✓ arrow C

Quiz____?In the figure, a washer on a string (string not shown) moves in the circular path shown in red. Which arrow best describes the direction of the centripetal acceleration of the washer at that instant in time?

arrow A arrow B arrow C arrow D - Answer✓✓ arrow C

Quiz____? 2 / 3

3 A CD spins at a constant angular velocity of 5.0 revolutions per second counterclockwise.Which of the following statements about the CD is true?

A net torque acts on it clockwise to keep it moving.A net torque acts on it counterclockwise to keep it moving.No net torque acts on it at all. - Answer✓✓ No net torque acts on it at all.

Quiz____?A CD spins at a constant angular velocity of 4.0 revolutions per second clockwise. Which of the following statements about the CD is true?

A net torque acts on it clockwise to keep it moving.A net torque acts on it counterclockwise to keep it moving.No net torque acts on it at all. - Answer✓✓ No net torque acts on it at all.

Quiz____?A position-time graph of a spring is shown here. What is the approximate amplitude of the spring's motion?

0.1 m 0.2 m 0.4 m 0.3 m -

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