Chapter 5 Work, Energy and Power Flashcards
1
Q
what is the work done equation
A
W = F x d
Work done = Force x distance
2
Q
what is the power equation involving work done
A
P = W / t Power = Work done / time
3
Q
what is the power equation involving energy
A
P = E / t Power = Energy / time
4
Q
what is the Kinetic Energy equation
A
KE = 0.5 x m x v^2
Kinetic Energy = 0.5 x mass x velocity squared
5
Q
what is the Gravitational Potential Energy equation
A
GPE = m x g x h GPE = mass x gravitational constant x height
6
Q
what unit is Energy and work done measured in
A
Joule
J
7
Q
what unit is power measured in
A
Watt
W
8
Q
what is the efficiency equation
A
Efficiency = (useful output energy or power / total input energy or power) x 100
