Answer:
Mass and speed
Step-by-step explanation:
The energy of motion of an object is also called kinetic energy, and it is defined as
![K=(1)/(2)mv^2](https://img.qammunity.org/2020/formulas/physics/middle-school/c6fs3acuplloc3whu5cpc8ui63cnl7ur39.png)
where m is the mass of the object and v its speed.
From the formula, we see therefore that the energy of motion of an object depends linearly on its mass and quadratically on its speed.