What does Newton's First Law of Motion state about an object in motion?

• It will change direction unless acted upon by an external force.

• It will come to a stop unless acted upon by an external force.

• It will stay in motion unless acted upon by an external force.

• It will decrease its speed gradually without an external force.

According to Newton's Second Law of Motion, what does the acceleration of an object depend on?

• The mass of the object only.

• The force applied and the mass of the object.

• The speed of the object only.

• The volume of the object.

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NGSS.MS-PS2-2

What is Newton's Third Law of Motion?

• Every action has a different reaction.

• Every action does not have a reaction.

• Every action has an equal and opposite reaction.

• Every action has a proportional reaction based on speed.

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What is the main difference between speed and velocity?

• Speed is how fast something moves and velocity is how fast and which direction something moves.

• Speed and velocity are the same.

• Velocity is how fast something moves and speed is how fast and which direction something moves.

• Speed is d/t and velocity= ma

What is acceleration in physics?

• Any change in speed or direction

• The force that resists motion between surfaces

• The resistance to change in motion

• The conversion of mechanical energy into thermal energy

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NGSS.MS-PS2-2

Which of the following is NOT acceleration?

• Speeding up

• Slowing down

• Changing directions

• Remaining at constant speed

What does friction primarily do?

• Always makes object turn

• Converts mechanical energy into thermal energy

• Increases the mass of objects

• Measures the speed of objects

What is inertia?

• A force that resists the sliding or rolling of one object over another

• The rate of change in velocity

• An object's resistance to change in motion

• The conversion of energy from one form to another

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NGSS.MS-PS2-2

Which of the following is NOT a common unit used to measure in physics?

• Speed

• Mass

• Force

• Temperature

A person is pushed forward into their seat belt when a car stops.  Which law is this?

• 1st
•  2nd
• 2 and 3
• 3rd