Why does a truck have more kinetic energy than small car that is moving the same speed of truck?

A truck has more kinetic energy than a small car moving at the same speed because kinetic energy depends on both mass and velocity. The formula for kinetic energy is:

KE = 1/2 * mv²

Where:

* KE = kinetic energy

* m = mass

* v = velocity (speed)

Since the truck has a significantly larger mass (m) than the car, even if their velocities (v) are identical, the truck's kinetic energy (KE) will be much greater. The larger mass is multiplied by the square of the velocity, resulting in a proportionally larger increase in kinetic energy.