Newton's Laws of Motion

Newton's Law of Inertia (first law) describes the motion of-

• Objects at rest only
• Objects in motion only
• Objects at rest and objects that are in motion
• Objects that accelerate

The tendency of an object to resist a change in motion is...

• inertia
• kinetic energy
• vector
• net force

Because of inertia, a moving object will keep ________ unless acted on by an unbalanced force.

• at rest

• moving

• in one spot

• inertia

Newton's Third Law States that..?

• Objects in motion stay in motion and objects at rest stay at rest.

• Force is equal to mass times acceleration.

• For each action, there is an equal and opposite reaction.

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NGSS.MS-PS2-1

A baseball player bats a ball with a force of 1,000N. The ball exerts a reaction force against the bat of...

• 1,000N in the opposite direction

• Less than 1,000N

• More than 1,000N

• Only 500N

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NGSS.MS-PS2-1

Name the action - reaction pair.

If the fist hits the wall, then..

(a)  

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NGSS.MS-PS2-1

For every action, there is...

• an equal and opposite reaction.

• mass times acceleration.

• food and water.

• none of the above.

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NGSS.MS-PS2-1

A football player kicks a 0.5 kg ball with an unknown force it accelerates by 3.0 m/s^2. What is the force of the kick?

(a)  

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NGSS.MS-PS2-2

What does the F in the F=m x a equation stand for?

• Mass

• Force

• Acceleration

• Pressure

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A 14.0 kg cart is being pushed with 538 N of force. What is the acceleration of the cart?

• 28.4 m/s^2

• 39 m/s^2

• 38.4 m/s^2

• 40 kg

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NGSS.MS-PS2-2