Force and Motion

If the man and the ball travels 90 m in 9 seconds, what is their average speed?

• 10 m/s

• 180 m/s

• 99 m/s

• 10 meters

If a lizard can run 8 m across the water in 4 seconds, how fast is he traveling?

• 32 m/s

• 2 m/s

• 2 seconds

• 34 meters

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This game of tug of war is an example of _________ forces.

• unbalanced

• balanced

• potential

• net zero

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What will the net force on the soccer ball be?

• 50 N to the left

• 50 N to the right

• 200 N to the left

• 200 N to the right

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A force that opposes motion is

• friction

• inertia

• acceleration

• momentum

7. A car traveling at 90 kilometers/hour when it suddenly stops. The passengers in the car will

• continue to move in a straight line and will slide forward in the car.

• come to a stop at the same time the car stops

• be pushed against the door on the passenger side

• be pushed against the door on the driver's side

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What effect does friction have on a moving object?

• it causes the moving object to slow and eventually stop

• it causes the moving object to speed up

• it keeps the moving object moving in the same direction forever

• it causes the moving object to turn around and move in the opposite direction

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Person on the left = 45 N

Person on the right = 32 N

What is the net force?

• zero N

• 10 N

• 77 N

• 13 N

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This motion graph represents:

• constant speed

• acceleration

• body at rest

• slowing down

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2. ______________________ is any push or pull on an object.

• force

• mass

• gravity

• air resistance