Answers2003390-Physics 1 Honors Sem. 1 - PetersCircular Motion

Potential Energy Answers

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An eagle that has a mass of 4.5 kg is spotted 5 m above a lake. It flies up to its nest in a tree at a height of 25 m.

A
221 J
B
882 J
C
1103 J
D
1323 J
2
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Lamar writes several equations trying to better understand potential energy.

Question illustration
A
The elastic potential energy is the same for any distance from a reference point.
B
The gravitational potential energy equals the work needed to lift the object.
C
The gravitational potential energy is the same for any distance from a reference point.
D
The elastic potential energy equals the work needed to stretch the object.
3

In which scenario is elastic potential energy present?

A
A bird sits in its nest in a tree.
B
A snake slithers through a leaf pile.
C
A dog sniffs at the base of a tree.
D
A fly stretches a spider web.
4

[BLANK]

A
kinetic
B
potential
C
gravitational
D
work
5

Which factor affects gravitational potential energy but not elastic potential energy?

A
spring constant
B
velocity
C
distance
D
mass
6

In which scenario is gravitational potential energy present?

A
A rabbit looks out of a hole in the ground.
B
A squirrel runs up the trunk of a tree.
C
A deer runs across a grassy field.
D
A cat pins a mouse to the ground.
7

Every spring has an equilibrium position. Which statements describe a spring at its equilibrium position? Check all that apply.

A
The spring constant is zero.
B
The elastic potential energy is at a maximum.
C
The elastic potential energy is zero.
D
The displacement of the spring is at a maximum.
E
The net force acting on the spring is zero.
8

A ball has 116.62 J of gravitational potential energy at a height of 85 m. What is the mass of the ball?

A
0.14 kg
B
0.37 kg
C
11.9 kg
D
21.82 kg
9

Which change would cause the largest increase in a mountain climber’s gravitational potential energy?

A
carrying twice the weight and climbing half as high
B
carrying half the weight and climbing half as high
C
carrying twice the weight and climbing twice as high
D
carrying half the weight and climbing twice as high
10

Kristina demonstrates a toy for her younger brother. The steps to operate the toy are listed below.Step 1. Push the toy down.Step 2. A spring compresses.Step 3. Release the toy.Step 4. The toy jumps into the air.

A
Elastic potential energy changes to gravitational potential energy.
B
Gravitational potential energy changes to elastic potential energy.
C
Kristina does work to increase the gravitational potential energy.
D
Kristina does work to increase the elastic potential energy.

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