Forces and Motion/Forces Cause Change Practice

A ball was pushed and it began to move. As the ball rolled, it gradually slowed to a stop.

What force caused the ball to stop?

• The force of friction is acting on the ball in the same direction as the arrow.

• The force of friction is acting on the ball in the opposite direction of the arrow.

• The force of gravity is acting on the ball in the same direction as the arrow.

• The force of gravity is acting on the ball in the opposite direction of the arrow.

A volleyball player hits the ball up over the net. The ball then falls to the ground on the other side of the net. Which of the following best describes the force applied to the ball, first by the player and then by gravity?

• The first force is a push and the second force is a pull

• The first force is friction and the second force is a push

• The first force is a pull and the second force is friction

• The first force is a pull and the second force is a push

Two students fill a cart with bricks. The cart has a handle on each end. What should the students do to make the cart move in the same direction?

• Student 1 pulls the cart to the left while Student 2 pushes the cart to the left.

• Student 1 pushes the cart to the right while Student 2 pulls the cart upward.

• Student 1 pulls the cart to the left while Student 2 pulls the cart to the right.

• Student 1 pushes the cart to the right while Student 2 pushes the cart downward.

Jamal is moving boxes. He has two different boxes that are different sizes. When he pushes the boxes, he finds that it is harder to move Box A than it is to move Box B. Why does Jamal have to push with more force on Box A than on Box B?

• Box A is smaller in size than Box B.

• Box A has less mass than Box B.

• Box A is larger in size than Box B.

• Box A has more mass than Box B.

Fort Myers is hosting a car racing event. Two cars raced around the track. The results of the race are in the table below: Which of the following conclusions can be made based on the results of the race?

• Both cars are traveling at the same speed since they travel the same distance.

• Both cars are traveling at the same speed, but have different masses.

• Car 2 is traveling at a greater speed than Car 1.

• Car 1 is traveling at a greater speed than Car 2.

Below is a picture of a magnet.

Which of the following objects, when placed in the spot labeled X would cause the bar magnet to push away from it?

• The south end of another bar magnet

• The north end of another bar magnet

• A piece of aluminum foil

• A piece of iron

A child was playing with a stomp rocket. This is a toy where you step down and pressure pushes the rocket into the air.

At what point would the stomp rocket overcome the force of gravity?

• When the stomp rocket lands on the ground

•   When the stomp rocket goes upward after being launched

• When the child placed the rocket on the ground before launching

• When the stomp rocket fell back to the ground

Two friends both want to play with the same wagon. Friend A is pulling on the wagon from the left side. Friend B is pulling on the wagon from the right side. The wagon is not moving.

Which of the following must be true?

• Friend A and Friend B are applying equal forces in the opposite directions.

• Friend A is applying more force in one direction than Friend B.

• Friend B is applying more force in one direction than Friend A.

• Both friends are applying equal forces in the same direction.

A child is sitting at the top of a slide. Which statement best describes what happens to the child as he leaves the top of the slide?

• He will change direction.

• He will stop.

• He will stop moving.

• He will start spinning.

Zachary started pushing a box across the room. Then, he removed some items from the box and continued pushing with the same force and direction. How does removing items from the box affect the motion of the box?

• The mechanical energy is decreased, making the box move faster.

• The friction is increased, making the box move slower.

• The mass is decreased, making the box move faster.

• The gravity is increased, making the box move slower.