must know formulas

Question 1

GPE(j)

Answer 1

GPE = whgpe
weight(N)
Height(m)

Question 2

Change GPE(j)

Answer 2

Change GPE = mgfsh
mass(kg) gravitational field strength(N/kg) height(m)

Question 3

power W

Answer 3

P=E/t
power(W)
Energy transferred (Joules)
Time(seconds)

Question 4

Power

Answer 4

P=W/t
power=watts
W=work done (joules)
t=times(seconds)

Question 5

efficiency

Answer 5

useful power output/total power output

Question 6

charge,Q(coulombs)

Answer 6

current x time
c(amps)
t(secs)

Question 7

stopping distance

Answer 7

thinking distance + breaking distance

Question 8

Kinetic(j)

Answer 8

1/2mv^2
mass(kg)
velocity(m/s^2)

Question 9

Moment,M(Nm)

Answer 9

Fd
f(n)
d(m)

Question 10

Distance

Answer 10

S*t

Question 11

Pd(v)

Answer 11

energy(j)/charge(A)

Question 12

Resistance(ohms)

Answer 12

pd(v)/c(A)

Question 13

Acceleration(m/s^2)

Answer 13

Change in v(m/s) / t(s)