Chapter 2 - Mechanics (2.2) Flashcards
1
Q
GPE equation?
A
mass x 9.81 x height
2
Q
Kinetic energy equation?
A
Ek= 0.5 x mass x velocity^2
3
Q
What is work done?
A
The amount of energy transferred (J)
4
Q
Work done equation?
A
Force x distance moved in direction of force
5
Q
Power equation? (energy)
A
Energy transferred / time taken
6
Q
Power equation? (work done)
A
Work done/ time taken
7
Q
Efficiency equation?
A
Useful (work done) or (energy output) / total energy input
8
Q
T=mg when an item is suspended.
What is the formula for T when the item accelerates up
A
T=mg + ma
9
Q
T=mg when an item is suspended.
What is the formula for T when the item accelerates down
A
T= mg-ma
