Energy Flashcards
1
Q
What is energy?
A
The ability to do work
2
Q
What are the forms of energy?
A
Potential (stored), kinetic (motion), thermal (heat), light, electricity
3
Q
What is the formula for potential energy?
A
Ep=mgh potential energy= (mass)(gravity)(height)
4
Q
What are the units for potential energy?
A
Ep= (J), mass= (Kg), gravity= (9.81 m/s2), height= (m)
5
Q
What is the formula for kinetic energy?
A
Ek= 1/2mv2 Kinetic energy= (0.5)(mass)(speed/velocity2)
6
Q
What are the units for kinetic energy?
A
Ek= (J), 1/2= (0.5) mass= (Kg), speed/velocity= (m/s)
7
Q
What are the formula conversions for Ek?
A
m=2Ek/v2 v=(square root) 2Ek/m
8
Q
What is the formula for mechanical energy?
A
Em= Ep + Ek
