Newtons 3rd Law Review

What is a force?

• something that always causes motion

• a type of acceleration

• a current

• a push or a pull

Newton’s 3^rd Law of motion states that any action will have a(n) ________and ______reaction

• Equal and similar

• Equal and different

• Equal and opposite

• Greater and opposite

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If the person is pushing backwards with the paddle, why do they move forward?

• The person will actually move backwards, they need to paddle the other way

• The water pushes back with an equal and opposite force

• The person is pushing harder than the water

• The water pushes back with a greater force than the person

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If a person pushes down on a trampoline, why do they move back up into the air?

• The trampoline pushes back with a greater force than the person

• The trampoline pushes back with less force than the person

• The trampoline pushes back with an equal and opposite force as the person

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How is this an example of Newton's 3rd Law?

• Only his head is pushing on the ball

• Only the ball is pushing on his head

• Both the ball and the head are exerting equal force on each other

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When the person pushes on the wall, and the wall pushes back, why does the person move and not the wall?

• The wall has more mass

• The person is pushing harder than the wall

• The wall is pushing harder than the person

• The skateboard is pushing on the person

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When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

• False

• True

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A book rests on a table. The force of gravity pulls down on the book with a force of 20 N. What prevents the book from falling down into the ground?

• The table and the book are pushing back with an acceleration of 10 m/s².

• The table pushes back up on the book with a force greater than 20 N

• The inertia of the book is equal to the inertia of gravity

• The table pushes back up on the book with an equal and opposite force of 20 N

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A bus hits a bug and the bug splatters on the windshield, which force is greater?

• The Bus
• The Bug
• They're the same
• Gravity acting on the bus

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When Ronda Rousey got kicked in the face, what is the reaction force?

• Face pushes on foot

• Face hurts a lot.

• Concussion

• All of the Above

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