# Newton’s laws of motionPage 5

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A. less than 50 N.

50 N.

more than 50 N.

None of the above.

Newton’s Second Law of Motion

Slide 35

If a 50-N person is to fall at terminal speed, the air resistance needed is

A. less than 50 N.

50 N.

more than 50 N.

None of the above.

Explanation:

Then F = 0 and acceleration = 0.

Newton’s Second Law of Motion

Slide 36

As a skydiver falls faster and faster through the air, air resistance

A. increases.

decreases.

remains the same.

Not enough information.

Newton’s Second Law of Motion

Slide 37

As a skydiver falls faster and faster through the air, air resistance

A. increases.

decreases.

remains the same.

Not enough information.

Newton’s Second Law of Motion

Slide 38

As a skydiver continues to fall faster and faster through the air, net force

A. increases.

decreases.

remains the same.

Not enough information.

Newton’s Second Law of Motion

Slide 39

As a skydiver continues to fall faster and faster through the air, net force

A. increases.

decreases.

remains the same.

Not enough information.

Newton’s Second Law of Motion

Slide 40

As a skydiver continues to fall faster and faster through the air, her acceleration

A. increases.

decreases.

remains the same.

Not enough information.

Newton’s Second Law of Motion

Slide 41

As a skydiver continues to fall faster and faster through the air, her acceleration

A. increases.

decreases.

remains the same.

Not enough information.

Newton’s Second Law of Motion

Slide 42

Newton’s Second Law of Motion A situation to ponder…

Consider a heavy and light person with same-size parachutes jumping together from the same altitude.

Slide 43

Who will reach the ground first?

A. The light person.

The heavy person.

Both at the same time.

Not enough information.

A situation to ponder…