Practice for Physics Unit Test

1. The unit for Force is -

• Newton

• Isaac

• Friction

• Inertia

1. The graph below shows an object in motion. Once the object was in motion, how many times did it experience an unbalanced force?

• 0

• 2

• 5

• 12

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1. The greater the ________ of an object, the greater its inertia.

• Force

• Height

• Speed

• Mass

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1. Two movers are working together to move a bedroom dresser. One mover is pulling on the dresser with 17 N and the other mover is pushing the dresser with 23 N. What is the total amount of Net Force they are using to move the dresser?

• 40 N

• 0 N

• 6 N

• 23 N

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1. All objects pull with gravity. Your paper, your house, or even your hair pulls with gravity.

Why is it that objects aren’t floating towards your paper or hair?

• All objects have gravity, but there it too much friction for them to move.

• All objects are attracted to the center of the Earth because the Earth has so much mass.

• There is too much force from the air for objects to move.

• Other objects don’t have gravity.

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What is Newton’s 1^st Law also known as?

• Law of Inertia

• Law of Gravity

• Law of Motion

• Law of Momentum

All forces have _________ and _________.

• Size and Mass

• Size and Direction

• Direction and Speed

• Size and Speed

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In 1971, the Apollo 15 spacecraft landed on the moon. During this mission, astronaut David Scott wanted to see what would happen if he dropped a hammer and a feather from the same height while standing on the moon's surface, which has no air. He performed the experiment, dropping both objects at the same time. What happened?

• The hammer and the feather floated away.

• The hammer hit the ground as the feather floated away.

• The hammer hit the ground first and then the feather hit.

• The hammer and the feather hit the ground at the same time.

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The skydiver is falling through the air with the chute open to slow down. In which direction is the parachute's force exerted on the skydiver?

• Left

• Right

• Down

• Up

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The picture shows the distance traveled by four identical toy cars in five seconds. Students used different steel springs to push the cars. Which car's spring applied the least amount of force?

• Car 1

• Car 2

• Car 3

• Car 4

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