Ch. 12.1 - Forces

Ch. 12.1

Forces

Multiple Choice

True or False? A force can act to cause an object at rest to move or it can accelerate an object that is already moving.

• True

• False

Open Ended

How can a force change the motion of an object that is already moving?

Open Ended

How do balanced and unbalanced forces affect the motion of an object?

Multiple Choice

True or False? Friction is a force that helps objects that are touching move past each other more easily.

• True

• False

Multiple Select

Select the choices that identify the different types of friction.

• Rolling

• Gravity

• Static

• Sliding

Open Ended

Why is less force needed to keep an object moving than to start the object in motion?

Multiple Choice

True or False? Earth's gravity acts downward toward the center of Earth.

• True

• False

Multiple Choice

True or False? Terminal velocity is the constant velocity of a falling object when the force of air resistance equals the force of gravity.

• True

• False