Forces

What is a force?

• the PUSH or PULL on an object

• The MOTION an object creates

• The objects HITTING one another

• Going REALLY FAST

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If these teams 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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What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

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What is force?

• a push or a pull

• motion

• acceleration

• interaction

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The acceleration of an object as produced by net force. F = m*a

• Newton's 1st Law

• Motion

• Newton's 2nd Law

• Newton's 3rd Law

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The force that attracts objects to the center of the Earth

• Friction

• Air resistance

• Motion

• Gravity

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What type of friction is not moving?

• static
• sliding
• fluid
• rolling

A type of friction that occurs when air pushes against a moving object causing it to decelerate.

• surface area
• air resistance
• velocity
• gravity 

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed
• less friction doesn't affect speed

A unit of force is

• Kilograms

• Newtons

• Litres

• Joules

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