Force and Newton's First Law of Motion

If an object has a kinetic energy, it must be _____.

• at rest
• in motion

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

The tendency of an object to resist change in motion.

• Force
• Motion
• Friction
• Inertia

____ is a force that occurs when an object rubs against another object.

• Motion
• Friction
• Velocity
• Speed

Friction can make a moving object slow down or stop.

• True
• False

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NGSS.MS-PS2-2

_____ is an object’s speed in a given direction.

• Friction
• Motion
• Speed
• Velocity

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NGSS.MS-PS3-1

Vector quantity has magnitude (size) and direction.

• True
• False

An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

• Newton's First Law of Motion
• Newton's Second Law of Motion
• Newton's Third Law of Motion
• Newton's Fourth Law of Motion

It is also called the Law of Inertia.

• Newton's First Law of Motion
• Newton's Second Law of Motion
• Newton's Third Law of Motion
• Newton's Fourth Law of Motion

A force is a ________________________ that acts on an object.

• push

• pull

• push or pull

What is the net force in this picture?

• 50 Newtons to the right
• 950 Newtons to the right
• 950 Newtons to the left
• 50 Newtons to the left

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NGSS.MS-PS2-2