50 kg bicyclist on a 10 kg bicycle speeds up from 5m/s to 10m/s . what was total kinetic energy before accelerating? what was total kinectic energy after accelerating?how much work was done to increase kinetic energy of the bicyclist? Is it more work to speed up from 0 to 5.0 m/s than from 5.0 m/s to 10.0 m/s? Explain.