Air resistance

An object is falling downward through Earth's atmosphere. In which direction is the air resistance force?

• Down

• Up

• Around the object

• Through the object

The upward force which is exerted against a falling object is

• gravity

• terminal velocity

• air resistance

• intertia

A force which causes objects to fall is

• weight

• gravity

• air resistance

• absorbency

When a falling object stops accelerating and falls at a constant speed, it is

• fluency

• constant velocity

• acceleration

• terminal velocity

A push or a pull.

• Gravity

• Force

• Motion

Complete the sentence.

It is not the difference in gravity that causes objects to fall at different speeds, it’s the difference in the amount of__________________.

• Gravity

• Mass

• Air resistance

The amount of matter in an object is its _____________.

• Weight

• Mass

• Force

If you jump out of an airplane, which two forces are acting on you?

• Gravity and friction

• Force and gravity

• Gravity and Air Resistance

When you drop a hammer and a feather on the moon what will happen? There is no air on the moon.

• They will hit at the same time

• The hammer will hit first

• The feather will hit first

________ acts to slow the rate at which objects fall.

• Thrust

• Barometer

• Air Resistance

• Gravity