Test- Unit 6 Force

Question 1

1. A baseball player swings his bat and misses the ball but hits a fly that was hovering over home plate. The acceleration of the fly compared to what the acceleration of the ball would have been with the same force applied to it would be
   A. smaller B. larger C. the same D. not enough information to determine

Answer 1

B.

U6 C3 P22

Question 2

8. Consider a watermelon that starts from rest and is dropped straight down from a tall building. Air resistance can be ignored. Which statement about the watermelon’s motion is FALSE?
   A. The watermelon falls with a constant velocity.
   B. The watermelon has a positive acceleration.
   C. After 2 seconds, its velocity is 19.6 m/s.
   D. The watermelon’s acceleration due to gravity is 9.8 m/s2.

Answer 2

A.

U6 C3 P22

Question 3

20. The upward force on an object falling through the air is

A. air resistance B. momentum C. inertia D. gravity

Answer 3

A.

U6 C3 P22

Question 4

23. The size of the gravitational force between two objects depends on their ____. A. frictional forces C. masses and the distance between them
    B. inertia D. speed and direction

Answer 4

C.

U6 C3 P22

Question 5

27. The highest velocity a falling object will reach.

Answer 5

Terminal velocity

U6 C3 P22