6. A motor transfers 3.4kj of useful energy in 1.5 minutes. Find it's power output.
- 2266.6 W
- 37.7 W
- 2.26 W
- 5.1 W
- 306 W
7. Calculate the power output of a 68kg man who runs 12m up a staircase in 8.5 seconds?
- 960 W
- 2804 W
- 48 W
- 96 W
- 6936 W
8. A racing car of mass 590kg is driving around a circular track of radius 265m, at a speed of 50m/s. Calculate centripetal force
- 111 N
- 5566 N
- 11 N
- 556 N
