What are balanced forces?

• Forces that are equal in size and opposite in direction, canceling each other out.

• Forces that are unequal in size and cause a change in motion.

• Forces that only push objects upward.

• Forces that only pull objects downward.

What happens when unbalanced forces act on an object?

• The object changes its motion.

• The object remains still.

• The object moves at a constant speed.

• The object disappears.

Tags

NGSS.MS-PS2-2

Which of the following is an example of balanced forces?

• A book resting on a table.

• A car accelerating on a highway.

• A ball rolling down a hill.

• A person jumping off a diving board.

What role does friction play between two surfaces in contact?

• It opposes motion and can slow down or stop moving objects.

• It speeds up the motion of objects.

• It has no effect on the motion of objects.

• It only affects objects in the air.

Tags

NGSS.MS-PS2-2

How does gravity affect objects on Earth?

• It pulls objects toward the center of the Earth.

• It pushes objects away from the Earth.

• It has no effect on objects on Earth.

• It only affects objects in space.

Tags

NGSS.5-PS2-1