You may find the following equations useful.
energy transferred = current u voltage u time E = I uVut
pressure u volume = constant p1 uV1
= p2 uV2
frequency =
1
time period f
T = 1
power =
work done
time taken
P W
t =
power =
energy transferred
time taken
P W
t =
orbital speed =
2 orbital radius π
time period
× 2 π r
v
T
× × =
Where necessary, assume the acceleration of free fall, g = 10 m/s2
Answer ALL questions.
A toy car rolls down a ramp and hits a cushion.
The graph shows how its velocity changes with time.