energy Flashcards
1
Q
what is the formula for power?
A
P=Fv or P=w/t
2
Q
what is the formula foe KE?
A
KE=1/2 mv^2
or
work done - heatloss
3
Q
formula for pe?
A
PE=mgh
4
Q
heat loss
A
W=fd or KE-PE
5
Q
hookes law
A
F=-k^2
6
Q
springs eqation (K)
A
k=F/x
7
Q
spring equation (PE)
A
PE=1/2kx^2
8
Q
efficency formula
A
work out/work in x100
or
Fnd/Fd x 100
9
Q
what is W=Fnd
A
work done by Fnet or change in PE
10
Q
What is W=fd
A
work done by friction or heatloss
11
Q
What is W=Fd
A
work done by person or energy burnt
12
Q
1 jeule is equal to…
A
kgm^3/s^2
13
Q
A
