Forces and Motion

A change in an object's position is called ______.

• Speed
• Motion
• Velocity
• Friction

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

• at rest
• in motion

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The tendency of an object to resist change in motion.

• Force
• Motion
• Friction
• Inertia

Friction can make a moving object slow down or stop.

• True
• False

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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

An automobile you are riding in suddenly stops, but you continue to go forward. Which law is this an example of?

• Newton's

  1st

  Law of Motion

• Newton's

  2nd

  Law of Motion

• Newton's

  3rd

  Law of Motion

Which of these best states Newton's Second Law?

• The greater the mass of an object the greater the force needed to change its motion.

• The greater the mass of an object the less force needed to change its motion.

• The mass of an object does not effect the force needed to change its motion

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Your skateboard begins to slow down when you roll off the sidewalk and across gravel. What is at work?

• gravity

• friction

• balance

• all of the above

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Who is the scientist who came up with the Laws of Motion?

• Sir Issac Newton
• The Greeks
• John Dalton
• Sir John Newt

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According to Newton's second law, if you increase the force applied to an object :

• it accelerates more
• it doesn't move
• you get more inertia
• it decelerates

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