A cyclist together with her bicycle has a combined mass of
PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
A cyclist together with her bicycle has a combined mass of 90kg. She accelerates on level ground from 5.0m s−1 to 10.0m s−1 in 8.0s. Air resistance and friction are negligible.
(a) Calculate the initial kinetic energy of the cyclist–bicycle system.
(b) Determine the final kinetic energy of the system.
(c) Find the work done by the cyclist during the acceleration.
(d) Hence compute the average power developed by the cyclist in this interval.