9: Equations

Question 1

Power (Energy)

Answer 1

Power = Energy / time

Question 2

Power (Force)

Answer 2

Power = Force * Velocity

Question 3

4th equation for suvat not given

Answer 3

s = (u+v / 2) * t

Question 4

how to calculate speed if given time

Answer 4

speed = distance / time

Question 5

how to find force for rate of change of momentum

Answer 5

F = Δp / Δt

Question 6

how to calculate final kinetic energy

Answer 6

final kinetic energy = original kinetic energy + change in gravitational potential energy

Question 7

relationship between work done, force and distance acting in a line

Answer 7

work done = force * distance

Question 8

relationship between work done, force and distance acting at an angle

Answer 8

work done = force * distance * cos theta

F s cos(theta)