Unit 3 Test Review: Force and Motion

Law of Inertia

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

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Work is when a force is used to move an object.
Which of these is an example of work?

• Sitting at a desk.

• Riding a bike.

• Pushing on a wall.

• Reading a book.

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The gravity on the Moon is weaker than the gravity on Earth. Compared to the mass and weight of the astronaut on Earth, on Mars she has:

• less mass and weight.

• less mass but equal weight.

• equal mass but less weight.

• 
  equal mass and weight.

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Simone Biles tumbles across the floor with an acceleration of 3m/s² striking the floor with a force of 141 N. What is her mass?

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What is the net force on the rope?

• 12 N

• 58 N

• 12 N + 58 N = 70 N

• 58 N - 12 N = 46 N

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What is the net force on the ball?

• 5 N

• 9 N

• 5 N + 9 N = 14 N

• 9 N - 5 N = 4 N

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If the man pushes with an equal amount of force, which object will accelerate more?

• Car because it has more mass

• Lawnmower because it has less mass

• Car because it has less mass

• Lawnmower because it has more mass

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What does friction do to a moving object?

• Makes it rise

• Speeds it up

• Slows it down

• All choices are correct

If the van stops suddenly, what happens to the box on top if it is not tied down?

• The box moves to the side.

• The box stops with the van.

• The box moves forward.

• The box moves backwards.

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