Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

When the car starts moving it acquires kinetic energy.

For this problem the formula of kinetic energy is:

Where m is the mass of the car = 850kg, and v is the speed of the car.

If we consider insignificant the energy lost by friction with soil and air we can propose the following equation:

Applied energy = Kinetic energy acquired by the car.

The velocity is 5.531 m/s

. west