UAM and Free Fall

1. In analyzing freely falling bodies, we neglect the effect of ___ to the object.

• A. gravity

• B. air resistance

• C. gravity and air resistance

• D. all forces except air resistance

2. A freely falling object's motion is under the sole influence of ____.

• A. gravity

• B. air resistance

• C. gravity and air resistance

• D. applied forces such as a persons push or pull

3. Freely falling objects accelerate downwards at a rate of ____.

• A. 9.8 s

• B. 9.8 m

• C. 9.8 m/s

• D. 9.8 m/s/s

4. What happens to the speed of an object that is dropped from a height and allowed to fall freely?

• A. it increases

• B. it decreases

• C. it remains the same

• D. it is always zero

5. What happens to the acceleration of an object that is dropped from a height and allowed to fall freely?

• A. it increases

• B. it decreases

• C. it remains the same

• D. it is always zero

6. With respect to time, what happens to the distance covered by an object that is dropped from rest and allowed to fall freely?

• A. it is always zero

• B. it remains the same

• C. it becomes lesser and lesser in time

• D. it becomes greater and greater in time

7. When an object is dropped from rest and is allowed to freely fall, the velocity and acceleration of the object after a time interval are ___.

• A. both upward

• B. both downward

• C. velocity is upward while acceleration is downward

• D. velocity is downward while acceleration is upward

8. Free fall is an example of a uniformly accelerated motion because the velocity is ___.

• A. zero

• B. constant at 9.8 m/s

• C. changing by 9.8 m/s every second

• D. never changing its direction

9. Free fall is an example of a uniformly accelerated motion (UAM) because the acceleration of a freely falling object is ___.

• A. zero

• B. constant

• C. increasing

• D. decreasing

10. If a bowling ball and a feather are simultaneously dropped from the same height in a room void of air, which object will reach the ground first?

• A. The feather because it is lightweight.

• B. The bowling ball because heavier objects fall faster than lighter objects.

• C. The bowling ball because the feather will drift off from its vertical path downward.

• D. The objects will reach the ground at the same time since they accelerated at the same rate from rest simultaneously.