Why do you need chemical energy to produce kinetic energy?

Answer 1

There are many ways to convert one form of energy into another form. We do have to start with energy (or in the case of an atomic bomb, mass-energy) in order to make another form of energy because it is impossible to make energy out of nothing (as stated in the law of conservation of mass-energy). Since the human body runs on chemical energy, we do use some degree of chemical energy in everything we do - even thinking requires it, not just the movement of muscles. If I cut a rope that is holding up a weight, which then falls, I would then be converting gravitational potential energy to kinetic energy - although even then, some chemical energy would also be involved in moving my hand in order to cut the rope.

Answer 2

Chemical energy is converted into kinetic energy because during chemical reactions, bonds between molecules are broken and reformed, releasing energy that can then be used to drive the movement of objects, like in muscle contractions or the propulsion of a car. Kinetic energy is the energy of motion, and to move objects, energy is required, which is often derived from chemical reactions within the body or fuel sources in machinery.

Answer 3

This energy is called activation energy. To interact molecules need a typical energy.