Unit 8 Review

What law is best described by inertia?

• 1st
• 2nd
• 3rd

What is Newtons 1st law of motion?

• Force= Mass multiplied by acceleration 
• An object at rest stays at rest unless acted on an unbalanced force. (inertia)
• For every action there is a equal and opposite  re-action.
• law of gravity 

What law of motion does this picture represent?

• Newton's 3rd law

• Newton's 4th law

• Newton's 1st law

• Newton's 2nd law

Objects with greater mass have a greater inertia; objects with less mass have less inertia.

• true

• false

Newton's 3rd Law states that for every action there is an equal and opposite ________.

• reaction

• satisfaction

• fraction

• transaction

Newton's 2nd Law says the acceleration of an object depends on its _______ and ______. (Choose two answers)

• force or applied force

• weight

• gravity

• mass

What explains a quantity that has BOTH speed and direction?

• Inertia

• Force

• Speed

• Velocity

The reason a boat bounces off the dock when it hits it.

• The boat and the dock repel each other.

• When the boat exerts a force on the dock, the dock exerts a force on the boat.

 What is the unit called that measures force?

• Isaac
• Yee
• Newton
• kilogram

A sports car speeds up much faster than a dump truck when a traffic light turns from red to green. Which law is this?

• Law 1

• Law 2

• Law 3