Forces and Motion

______ measures an object's tendency to resist changing its motion.

• Acceleration
• inertia
• Gravity
• weight

A ball is kicked and rolls along a level field until it comes to a stop. What is most responsible for the ball coming to a stop?

• air

• gravity

• mass

• friction

What does Newton's third law say? 

• For every action, there is an equal and opposite reaction.
• f=ma
• Intertia is what makes objects move

What does this graph represent?

• Constant Speed
• Acceleration
• Not moving

What is happening at D?

• Stationary
• Accelerating
• Fast steady speed; moving away from the starting position
• Slower steady speed; moving away from the starting position

this force is ___________ and there will be 

• unbalanced, no movement
• balanced, movement to the left
• balanced, no movement

John pushed two identical toy cars across the same flat smooth floor. Why did both cars travel the same distance?

• A.

  because he pushed the cars at the same time

• B.

  because he pushed the cars at different times

• C.

  because he applied different forces to the two cars

• D.

  because he applied the same force to each of the cars

Describe the motion of this object.

• positive velocity

• negative velocity

• zero velocity

• not moving

This is a velocity-time graph.  What is the object doing in segment C?

• Positive acceleration
• Negative acceleration
• Constant Velocity
• Not moving

During which interval is the object slowing down?

• A to B
• D to E
• E to F
• G to H