UAM and Free Fall

In analyzing free falling bodies, we neglect the effect of _______ to the object.

• air resistance

• gravity

• air resistance and gravity

• all forces except air resistance

A free falling object's motion is under the sole influence of _____.

• air resistance

• gravity

• air resistance and gravity

• applied forces such as a persons push or pull

Free falling objects accelerate downwards at a rate of ____.

• 9.8 s

• 9.8 m

• 9.8 m/s

• 9.8 m/s/s

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

• it increases

• it decreases

• it remains the same

• it is always zero

A textbook is dropped from a second floor window and falls to the ground. What happens to the acceleration as the book falls to the ground?

• the acceleration increases

• the acceleration decreases

• the acceleration remains constant

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

A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?

• the velocity increases

• the velocity decreases

• the velocity remains constant

Two rocks with different size and mass are dropped from the same height. Which of the rock will reach the ground first?

• greater rock

• smaller rock

• both reach the ground at the same time

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

If you throw a baseball straight up, what is its velocity at the highest point?

• 10 m/s²

• 10 m/s

• 0 m/s²

• 0 m/s