Force and Motion Review

Force is:

• The change in position of an object over time

• The total amount of force on an object

• The amount of matter in an object

• The effect of gravitational force on the mass of an object

• A push or pull on an object that puts it in motion

Net force is:

• The change in position of an object over time

• The total amount of force on an object

• The amount of matter in an object

• The effect of gravitational force on the mass of an object

• A push or pull on an object that puts it in motion

Reference point is:

• A branch of science that deals with matter, energy, motion, and force

• A stationary object that can be compared to when there is a change in position

• A force that opposes motion; can cause an object to slow or stop

• Tendency of an object to resist change in motion. A property of matter

• Force of attraction between two objects due to their masses

Two forces are applied to a 17

kg box, as shown. The box is on a smooth surface.

Which statement best describes the acceleration of the box?

• The box accelerates at 1.0 m/s2 to the right because the net force is 17 N to the right.

• The box accelerates at 1.9 m/s2 to the right because the greater force is to the right.

• The box accelerates at 3.0 m/s2 because the combined forces cause the box to accelerate.

• The box does not accelerate, because neither force is large enough to move the box.

The change in the position of an object over time.

• Applied Force

• Gravity

• Motion

• Friction

A ball is at rest at the top of a hill until a boy pushes it with his hands. What is the force that causes motion in this scenario?

• The resting ball

• The hill

• The boy's hands

• The moving ball

Which of the following is an example of a balanced force?

• An aeroplane taking off.

• Kicking a football.

• A car slowing down.

• A boy standing still.

Which of the following is an example of an unbalanced force?

• 
• 
• 
• 

What is the sum of all forces acting on an object and direction?

• Net Force

• Balanced Force

• Unbalanced Force

• Applied Force

Which of the following correctly describes a system with a net force of 0N?

• The system would be balanced, therefore the object would move

• The system would be balanced, therefore the object would not move

• The system would be unbalanced, therefore the object would move

• The system would be unbalanced, therefore the object would not move