Newtons Laws and Forces PT Practice

What is Newton's 3rd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

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If a 10 kilogram object had a force of 50 newton's applied to it, what would its acceleration be?

• 15 m/s^2
• 5 m/s^2
• .5 m/s^2
• 10 m/s^2

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What force slows objects down and keeps them from moving?

• Acceleration

• Gravity

• Friction

• Net Force

An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe

• 2nd law

• 1st law

• 3rd law

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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Newton’s law states that for every action, there is an ________ reaction.

• unequal and opposite

• equal and similar

• stronger and opposite

• equal and opposite

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When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

• The cannon moving forward

• The cannon moving backwards

• The cannonball moving backwards

• The cannonball moving forward

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Force always come in________

• waves

• triplets

• pairs

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Are you pulling on the earth

• yes

• no

• maybe

• depends on how i'm feeling

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What does the second part of Newton’s first law say about objects at rest?

• They cannot move unless they have a lot of friction.

• If they are heavy, they will stay at rest, but if they are light, they will move.

• They will stay at rest unless an outside force makes them move.

• They have more inertia than objects in motion.