Summer School Physical Science - CH 2 - Section III Quiz

If the net force on an object is 0, then the forces are said to be what?

• Neutral

• Small

• Unbalanced

• Balanced

What type of motion does an object experiencing balanced forces have?

• Unchanging

• Increasing

• Decreasing

• Objects with no net force can't move

If I am pulling on a rope in one direction with 20 N of force, and you are pulling in the other with 30 N of force, what will happen?

• We will both move backwards

• The rope will stretch (its not a stretchy rope)

• We will move towards you with 50 N of force

• We will move towards you with 10 N of force

Which of the following are a good example of Newton's First Law?

• Astronauts weigh less on the moon, but have the same mass

• When I come to a sudden stop, the milkshake I forgot was the roof of my car spills all over my windshield

• Rockets take off by expelling hot gasses from their rockets

• I throw a baseball and bowling ball with the same amount of force, but the baseball has more acceleration

Why does an aircraft carrier have more inertia than an airplane?

• Because the airplanes go on top of the carrier

• Because the carrier is more buoyant

• Because the Air Force won the last football game

• Because the carrier has more mass than the plane.

The ______of an object tends to make the object resist being set into motion.

• mass
• force
• motion
• unbalanced forces 

The tendency of an object to resist change in motion.

• Force
• Motion
• Friction
• Inertia

Inertia is Newton's _______ Law of Motion.

• First

• Second

• Third

Objects with less mass are...

• easier to speed up or slow down.

• harder to speed up or slow down.

Which of these are GREAT example of inertia? (Check all that apply)

• a person flying through the windshield during a car wreck because they weren't wearing their seat belt

• a person staying in the vehicle and hitting the air bag during a car wreck because they are wearing a seat belt

• earth constantly traveling at the same speed in it's orbit

• a meteor traveling through space at a constant speed until it hits something