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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What is the net force on the car?

• 400 N forward (left)

• 0 N (balanced forces)

• 200 N forward (left)

• 200 N backward (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 is the acceleration of an object that takes 20 seconds to change from a speed of 200 meters/second to 300 meters/second?

• 5 m/s squared

• 5 m/s

• 100 m/s

• 100 m/s squared

The gravity between two objects depends on the distance and ____________.

• magnetic attraction

• volume

• mass

• momentum

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The planet Jupiter has much more mass than Earth. What is the weight of an astronaut who lands on Jupiter?

• The astronaut would weigh more on Jupiter than on Earth

• The astronaut would weigh somewhat less on Jupiter than on Earth

• The astronaut would have the same weight on Jupiter as on Earth

• The astronaut would be weightless on Jupiter

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