Unit 5 Review

Inertia is

• tendency of an object to maintain its current motion/nonmotion
• change in energy
• movement across a surface
• objects accelerating or being acted on m

What happens to your body when a plane comes to a stop on the runway is which law?

• Newtons law of force and acceleation
• Newtons law of action-reaction
• Newtons law of inertia
• Newtons law of Science

If something has no friction what will occur to objects moving across a surface?

• decrease speed
• change direction
• remain at constant speed
• stop moving

an object traveling at a steady speed is traveling at a ______ speed

• different
• constant/equal
• slowing down
• friction

when you did the balloon races, the bigger ballon had more inertia; why?

• density equals mass
• grater mass has less inertia
• greater mass has more inertia
• volume equals density

think about the lab with the cup, card & coin lab; what force acted on the coin?

• friction
• acceleration
• momentum
• law of interia and gravity

think about the Earth, continental plates float on the mantle.  if the plates are moving around like kids in intertubes which of Newtons laws is in effect?

• Newton's law of inertia
• Newtons law of force
• Newtons law of action/reaction
• Newtons law of acceleation

Newtons Second Law says

• action-reaction
• object in motion wants to stay in motion
• mass influences the ability to move an object

If the mass of an object is 40 and is pushed with 20 Newtons of force; what is the acceleration

• 2 m/s
• .5 m/s
• 800 m/s
• 60 m/s

if an force of 30 newtons is applied with an acceleration of 1.5 m/s what is the mass of the object that is moving?

• 45 kg
• 20 kg
• 31.5 kg