AnswersPhysical SciencePotential and Kinetic Energy

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6

Which statement best compares potential and kinetic energy?

A
Objects always have more potential energy than kinetic energy.
B
Objects always have more kinetic energy than potential energy.
C
Only potential energy decreases when an object’s height increases.
D
Kinetic energy increases and potential energy decreases when the velocity of an object increases.
7

Which two factors are used to calculate the kinetic energy of an object?

A
velocity and mass
B
mass and volume
C
gravity and velocity
D
volume and height
8

Ella has a mass of 56 kilograms , and Tyrone has a mass of 68 kilograms Ella is standing at the top of a skateboard ramp that is 1 point 5 meters tall. Which conclusion is best supported by the given information?

A
If Tyrone stands at the top of the same ramp, his potential energy will be the same as Ella’s.
B
If Tyrone stands at the top of a 1 m high ramp, his potential energy will be greater than Ella’s.
C
If Tyrone stands at the top of the same ramp, his potential energy will be less than Ella’s.
D
If Tyrone stands at the top of a 2 m high ramp, his potential energy will be greater than Ella’s.

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Pretest Answers — Physical Science