Newton's Laws

What is the formula of Newton's Second Law?

• F(net) = ma

• F(net) = m/a

• F(net) = a/m

• F(net) = m + a

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NGSS.MS-PS2-2

If a net force of 20 N is exerted on two objects, one with a mass of 0.5 kg and the other with a mass of 0.7 kg, which ball will have the greater acceleration?

• The 0.5 kg ball

• The 0.7 kg ball

• Both have the same acceleration

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NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s². What is the net force acting on the bike?

• 2 N

• 0.5 N

• 0 N

• 200 N

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NGSS.MS-PS2-2

A man pushes a 2kg box to the right with a force of 10N while a young boy pushes the box to the left with a force of 6N. What is the acceleration of the box?

• 0 m/s²

• 2 m/s²

• 5 m/s²

• 3 m/s²

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NGSS.MS-PS2-2

A cat sitting on a couch, a pencil on desk, and a car at rest are all examples of..

• Balanced Forces

• Unbalanced Forces

Which type of force(s) will cause a change in an object's motion?

• A zero net force

• Balanced forces

• Unbalanced forces

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NGSS.MS-PS2-2

Newton's third law states that any action will have a(n) _______ and ______ reaction

• Equal and similar

• Equal and opposite

• Equal and different

• Greater and opposite

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NGSS.MS-PS2-1

Which of Newton's laws is illustrated when a magician pulls a tablecloth out under the dishes without disturbing them?

• First Law

• Second Law

• Third Law

• Fourth Law

When the air is released from a balloon, the air moves in one direction, and the balloon moves in the opposite direction. Which law best explains the motion of the balloon?

• Newton's first law

• Newton's second law

• Newton's third law

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NGSS.MS-PS2-1

Slamming on the brakes in a moving car makes a passenger move forward against his or her seat belt because

• the passenger has the inertia to keep moving forward

• the passenger is being pushed by the seats of the car

• the passenger is better able to stop themselves in this manner

• the passenger has an equal and opposite force supporting their weight

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