Pretest

Question 1

Which statement best compares the accelerations of two objects in free fall?

Revolt · Accepted Answer

The objects have the same acceleration.

Question 2

Which change will always result in an increase in the gravitational force between two objects?

Revolt · Accepted Answer

increasing the masses of the objects and decreasing the distance between the objects

Question 3

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 4

Increasing which factor will cause the gravitational force between two objects to decrease?

Revolt · Accepted Answer

distance between the objects

Question 5

A spacecraft is launched from Earth toward the moon. Where will the spacecraft be when the gravitational forces acting on it are equal?

Revolt · Accepted Answer

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

Question 6

Which factors affect the gravitational force between two objects?

Revolt · Accepted Answer

mass and distance

Question 7

The gravitational force between two objects is 100 N. If the mass of each object is doubled, what is the gravitational force between the objects at the same distance?

Revolt · Accepted Answer

400 N

Question 8

What units are used to measure mass and weight?

Revolt · Accepted Answer

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

Question 9

What is the weight, on Earth, of a book with a mass of 1 point 5 kilograms ?

Revolt · Accepted Answer

14 point 7 cap n

Question 10

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

Revolt · Accepted Answer

gravity

Pretest Answers

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