Work, Energy and Power Flashcards
1
Q
Energy is
A
the ability to do work
2
Q
Work is
A
the product of the force and distance moved
Work = force x distance moved
3
Q
Power is
A
work done per second or energy changed per second
P = W/t
4
Q
Watt is
A
1 joule per second
5
Q
The principle of conservation of energy states
A
Energy cannot be created nor destroyed
6
Q
Work Energy Principle states
A
The change in the energy of an object is equal to the work done on the object
7
Q
Kinetic energy is
Its formula is
A
The energy an object has due to its motion
Ek = 1/2mv²
8
Q
Potential energy is
Its formula is
A
The energy an object has due to its position in a force field
Ep = mgh
9
Q
Loss in Kinetic energy =
A
Gain in potential
10
Q
A solar constant is
A
The average amount of the Suns energy falling normally on one metre squared of the Earths atmosphere per second
