Energy Flashcards

1
Q

What is energy?

A

The ability to do work.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is mechanical energy?

A

The sum of a body’s potential energy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is gravitational potential energy?

A

The energy possessed by a body due to its position.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

(gravitational)PE = ?

A

(gravitational)PE = mgh(mass * magnitude of an object due to its gravity * height of the object from the ground.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is elastic potential energy?

A

The energy possessed by a spring or a rubber band when it is stretched or compressed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

(elastic)PE = ?

A

(elastic)PE = 1/2kx^2 (one half force constant times the elongation squared)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is kinetic energy?

A

The energy possessed by a body because of its motion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

KE = ?

A

KE = ? 1/2mv^2 (one half mass times velocity squared)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is work-energy theorem?

A

The work done on an object equals the change in kinetic energy of the object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

W = ?

A

W = KE - KEo

How well did you know this?
1
Not at all
2
3
4
5
Perfectly