An engine performs 2700 j of work on a scooter. the scooter and rider have a combined mass of 150 kg. if the scooter started at rest, what is the speed of the bike after the work is performed?

Due to the principle of conservation of energy, the work done by the engine to move the scooter converts into kinetic energy of the scooter:

where M is the combined mass of scooter and rider, and v is the velocity of the scooter. Therefore, we can find the velocity as:

The masses of the objects and their densities