Work, Energy & Power · CSEC Physics
3 past-paper questions on Work, Energy & Power, part of Mechanics, from every CSEC Physics paper on Quelpr.
- 4(b)(i)9 marks· Physics Q4 4(b)(i)If a cyclist of mass 70 kg uses a bicycle of mass 7 kg, how much work must the cyclist do against gravity in order to ascend to 2100 m from sea level (0 m)?
- 4(b)(ii)9 marks· Physics Q4 4(b)(ii)One particular descent goes from 2100 m to 1600 m. Assuming the work done against friction is 90% of the potential energy change of the cyclist and the cycle, what INCREASE in speed in km/h can a rider attain by the end…
- 6(b)(ii)2 marks· Physics Q6 6(b)(ii)Derive an expression in terms of m, h and v for the difference between the potential and the kinetic energy of the ball.