Balanced and Unbalanced Forces Quiz

Which of these can cause an object to change direction?

• balanced forces

• an unbalanced force

• no force

• a force in the direction the object is moving

Tags

NGSS.MS-PS2-2

A box is sitting on the floor. Then, two workers start pushing on the box with the same amount of force. This is shown in the picture below. The arrows, in the picture, show the direction of each force. What happens to the box while they are pushing on it?

• The box moves to the right.

• The box moves to the left.

• The box does not move.

• The box moves upward.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Kyle and Jon are both pushing the same box. Kyle is pushing to the right. Jon is pushing to the left. What will the net force be?

• 17 N

  Unbalanced

  Moves to the Right

• 3 N

  Unbalanced

  Moves to the Left

• 17 N

  Balanced

  No Motion

• 3 N

  Balanced

  No Motion

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of these would make the box move to the left?

• 30 N moving to the left

• 200 N moving up

• 230 N moving down

• 30 N moving to the right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Sandy puts a paper clip on the table and puts a magnet near the paper clip. The paper clip begins to move. What type of forces are acting on the paper clip?

• unbalanced

• only gravitational

• only magnetic

• balanced

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following statements is true?

• Moving objects will eventually stop moving on their own.

• Moving objects stay in motion until acted on by another force.

• Objects at rest eventually begin to move.

• An object moving in a straight line will eventually change direction on its own.

Tags

NGSS.MS-PS2-2

Lance is mowing the grass in a large field. There are four forces acting on the lawn mower. The force of gravity pulls down on the lawn mower, and the surface of the Earth pushes up on the lawn mower. As Lance starts to push the lawn mower to the left, friction applies a force to the right. These forces are shown in the picture.

How will the lawn mower move?

• The mower will move left with 575 N

• The mower will move up with 500 N.

• The mower will move left with 15 N.

• The mower will not move with 0 N.

Tags

NGSS.MS-PS2-2

Alyssa is playing ice hockey on a smooth ice surface. The image below shows the forces acting on the hockey puck as she begins to pass it. How does the hockey puck's motion change as she begins to pass it?

• It moves downward because an unbalanced force is acting on it.

• It moves upward because balanced forces are acting on it.

• It is motionless because balanced forces are acting on it.

• It moves to the right because an unbalanced force is acting on it.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If the book is not moving, which statement must be true?

• The force of the table on the book is not equal to the force of gravity, and they act in the same direction.

• The force of the table on the book is equal to the force of gravity, but they act in opposite directions.

• The force of friction is equal to the force of gravity, but they act in the opposite directions.

• The force of friction is not equal to the force of gravity, and they act in the same direction.

Tags

NGSS.MS-PS2-2

Which of the following statements is true?

• Unbalanced forces do not cause a change in motion.

• Balanced forces do not cause a change in motion.

• Balanced forces always cause a change in motion.

• Gravity always causes a change in motion.

Tags

NGSS.MS-PS2-2