Increasing the speed of a motorbike increases the amount of energy in its kinetic energy store. This is because kinetic energy (KE) is given by the formula:
KE=12mv2KE=\frac{1}{2}mv^2KE=21mv2
where mmm is the mass of the motorbike and vvv is its velocity (speed). According to this formula, kinetic energy is proportional to the square of the velocity. Therefore, if the speed of the motorbike increases, the kinetic energy increases by the square of that increase. For example, doubling the speed results in quadrupling the kinetic energy.