Force and Motion

A push or pull that acts on an object.

• Force

• Gravity

• Friction

• Energy

What unit do scientists use to measure force?

• Newton

• Grams

• Meters

• Meter per second per second

A force that opposes motion is

• friction

• inertia

• acceleration

• momentum

Which force produces a change in motion?

• unbalanced force
• balanced force
• gravitational force
• frictional force

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If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

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Which force always pulls downward on objects?

• Support force

• Friction force

• Gravity

• Air resistance

The overall force exerted on an object; measured in Newtons.

• Balanced forces

• Unbalanced forces

• Net forces

• Newtons

What is the net force on the block? (click on the words to view the picture)

• 5 Newtons up
• 5 Newtons down
• 15 Newtons up
• 15 Newtons down

What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

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Which of the following is an example of a non-contact force?

• Friction
• Gravitational
• Motivational
• Acceleration

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