3.3 Flashcards
1
Q
work done when a force is applied at an angle
A
Fcos(theta) x d
2
Q
work done from a force distance graph
A
area under the graph
3
Q
what is work done
A
the energy transferred by a force x the distance into direction of motion
4
Q
how to derive the GPE formula
A
use w=fd and sub in f=ma
5
Q
how to derive the KE formula
A
use w=fd, f=ma and v^2= u^2+2as
6
Q
conservation of energy
A
energy can neither be destroyed nor created only transferred
7
Q
units of energy
A
joules or Nm
8
Q
units of power
A
Watts or Js^-1
