Force and Motion

A ball rolls. A force pushes the ball the same direction it moves. What happens to the ball?

• It stops moving.

• It moves faster in the same direction.

• It moves slower.

• It keeps moving at the same speed, same direction.

A truck rolls on a level street. What can make it stop moving?

• A force that pushes it straight down.

• A force that pushes it in the same direction it is moving.

• A force that pushes it in the opposite direction it moves.

• A force that pushes it straight up.

A ball is thrown up in the air. What will the force of gravity cause the ball to do?

• Speed up

• Change direction and come back down.

• Slow down as it falls

If the wind stops blowing, what will happen to the motion of a kite?

• The kite will fly in the air

• The kite will fall to the ground because of the gravity.

• The kite will fall because the person is pulling on it.

• The kite will fly away because nothing is pulling on it.

Where should you place a pushing force to make the ball move faster without changing direction?

• W

• X

• Y

• X

Two ping pong players hit a ball back and forth. What will happen to the direction of the ball as a result of the force?

• The ball continues in one direction.

• The ball will slow down.

• The ball will stop.

• The ball will change directions.

Mrs. Clifton kicks a ball and it moves along the ground. Why does it move?

• The kick decreases the weight of the ball.

• The kick removes friction between the ball and ground.

• The kick applies a force to the ball.

• The kick decreases the force of gravity.

A ball is lying on the floor. When will the ball move?

• It will never move.

• When a force acts on it.

• When gravity pulls on it

• When the lights are turned on.

Two people are pulling a wagon and another one comes to help. How does the force affect motion?

• It will move faster.

• It will change direction

• It will continue unchanged.

• It will remain at rest.

I hit a baseball. After I hit the ball, how will the gravity change the motion of the ball?

• Gravity will pull the ball downward.

• Gravity will make the ball travel farther.

• Gravity will make the ball go faster.

• Gravity will make the ball go up.