Force and Motion Part 1

Which two of these forces act on parachutes?

• Air Resistance

• Gravity

• Thrust

• Kinetic Energy

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The larger the surface area of the moving object, the ___________ air resistance there is.

• Less

• More

• Longer

• Quicker

Air resistance pushes against falling

objects and __________________.

• Speeds them up

• Keeps them afloat

• Slows them down

• Spins them

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Which has more air resistance?

• 
• 

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The more streamlined an object is, the...

• More air resistance

• Less air resistance

• Slower air resistance

• Faster air resistance

When dropped from the same distance, which will fall to the floor faster?

• 
• 

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Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

The amount of friction depends on the weight of the objects pressing together.

• True
• False

How does friction affect speed?

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

Force the opposes motion between 2 surfaces

• force
• Newton
• friction
• net force