Gravity

Question 1

What is the only force that can act on an object in free fall?

Revolt · Accepted Answer

gravity

Question 2

Hector drew the diagram below to illustrate projectile motion.

Revolt · Accepted Answer

He should make the arrow for “Path” curve downward.

Question 3

best

Revolt · Accepted Answer

The objects have the same acceleration.

Question 4

A ball is thrown forward at 5 m/s.

Revolt · Accepted Answer

The ball would curve down more sharply on Earth than on the moon.

Question 5

A spacecraft is launched from Earth toward the moon.

Revolt · Accepted Answer

closer to the moon than to Earth because Earth has greater mass than the moon

Question 6

The gravitational force between two objects is 100 N.

Revolt · Accepted Answer

400 N

Question 7

What units are used to measure mass and weight?

Revolt · Accepted Answer

Mass is measured in kilograms, and weight is measured in newtons.

Question 8

Which factors affect the gravitational force between two objects?

Revolt · Accepted Answer

mass and distance

Question 9

When does a skydiver achieve terminal velocity?

Revolt · Accepted Answer

when gravity equals air resistance

Question 10

Why are objects that fall near Earth’s surface rarely in free fall?

Revolt · Accepted Answer

Air exerts forces on falling objects near Earth’s surface.

Gravity Answers