Unit Test — Unit test Answers
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What happens in terms of energy when a moving car hits a parked car, causing the parked car to move?
A
The moving car transfers kinetic energy to the parked car.B
Kinetic energy in the moving car disappears.C
Kinetic energy in the parked car is created.D
The parked car transfers kinetic energy to the moving car.22
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An eagle carries a fish up 50 m into the sky using 90 N of force. How much work did the eagle do on the fish? (Work: W = Fd)
A
40 JB
59 JC
140 JD
4500 J23
The image shows a dam.
A
X: kinetic energyY: potential energyB
X: potential energyY: kinetic energyC
X: mechanical energyY: electrical energyD
X: electrical energyY: mechanical energy24
This diagram shows a skier moving down a hill.
T
The skier has potential and kinetic energy.T
The skier has only potential energy.T
The skier has only kinetic energy.T
The skier does not have potential or kinetic energy.25
Pablo prepares to lift a barbell. During which stage of the lift does Pablo do work on the barbell?
A
when he holds the barbell up above his headB
when he applies force to the barbell but has not moved itC
when he lifts the barbell from the floor to his chestD
when he lets go of the barbell and allows it fall to the groundDid you find these answers helpful?
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