When an object's speed goes up, the kinetic energy goes up as well.
Kinetic energy is the energy that an object possesses due to its motion. The formula for kinetic energy is:
kinetic energy = (1/2) x mass x velocity^2
As you can see from the formula, kinetic energy is directly proportional to the square of the velocity. This means that as the velocity of an object increases, the kinetic energy also increases. Conversely, if the velocity of an object decreases, the kinetic energy decreases as well.