A bicyle generator develops 3V when the bicycle moves with a velocity of `12 kmh^-1`. How much emf wll be induced if the velocity fo bicycle increases to `18 kmh^-1`?

A body of mass 10 kg is moving wih a velocity of 100 cm s^-1 . Find the magnitude of force required to stop I in 10 second. How much distance will it move through before coming to rest ?