Unit 5.1 Explore 1 concept review

What happens to an object that experiences an unbalanced force?

• It will stop moving

• It will explode

• It will accelerate

• All answers are correct

How does the velocity of an object change when there is acceleration?

• It speeds up

• It slows down

• it changes direction

• all answers are correct

What happens to an object if the forces acting on it are balanced?

• it will lift off the ground

• it changes direction

• there is no change

• all answers are correct

What type of forces are acting on an object at rest?

• balanced force

• unbalanced force

• applied force

• Jedi force

The more mass that an object has, the more force that must be applied to cause the same acceleration of the object.

• True

• False

What kind of energy does an object in motion have?

• potential energy

• motion energy

• kinetic energy

• material energy

Which of the following would have kinetic energy?

• a battery

• a parked car

• a dancer spinning

• a rock on a cliff

What would happen to the kinetic energy of an object if you doubled the mass?

• The kinetic energy would double

• It would stay the same

• The kinetic energy would triple

• The kinetic energy would be cut in half

If a plane was traveling at the same velocity as a bird, which would have the most kinetic energy?

• Plane

• Bird

• They have the same amount of kinetic energy

• They have the same amount of kinetic energy

If a 2 kg ball is traveling at 4 meters per second, what is its kinetic energy?

• 2 J

• 4 J

• 8 J

• 16 J