1-Dim Motion Review

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

Based on the motion map above, the object is most clearly:

• speeding up

• slowing down

• moving at a constant velocity

• at rest

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

Based on the graph above, describe the motion of the object from 0-4 seconds

• Object is moving in the positive direction and speeding up

• object is moving in the positive direction and slowing down

• object is moving in the positive direction at a constant speed

• object is moving in the negative direction and slowing down

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

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

What happened during A to B point?

• not moving

• increasing speed at a constant rate

• moving at a constant speed

• acceleration

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

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

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