Gravity

Question 1

Which factors affect the gravitational force between two objects?

Revolt · Accepted Answer

mass and distance

Question 2

What is the weight, on Earth, of a book with a mass of 1.5 kg?

Revolt · Accepted Answer

14.7 N

Question 3

The gravitational force between two objects is 100 N.

Revolt · Accepted Answer

400 N

Question 4

Hector drew the diagram below to illustrate projectile motion.

Revolt · Accepted Answer

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

Question 5

What determines the path that an object in projectile motion follows? (Ignore air resistance)

Revolt · Accepted Answer

gravity and inertia

Question 6

What units are used to measure mass and weight?

Revolt · Accepted Answer

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

Question 7

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 8

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.

Question 9

Which describes an object in projectile motion?

Revolt · Accepted Answer

The object’s inertia carries it forward.

Question 10

When does a skydiver achieve terminal velocity?

Revolt · Accepted Answer

when gravity equals air resistance

Gravity Answers