A woman runs as shown. What main energy conversion occurs? (1 point) Responses Thermal energy changes into mechanical energy because heat provides energy for motion. Thermal energy changes into mechanical energy because heat provides energy for motion. Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner. Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner. Mechanical energy changes into chemical energy as the kinetic energy from motion creates reactions in the surrounding air. Mechanical energy changes into chemical energy as the kinetic energy from motion creates reactions in the surrounding air. Chemical energy changes into mechanical energy because energy from digestion of food provides energy for
motion.
Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner.
The main energy conversion that occurs when a woman runs is mechanical energy changing into thermal energy because the energy from motion creates heat in the air around the runner.
To understand this, we need to know the basics of energy conversion. Energy can exist in many forms, such as thermal (heat), mechanical (motion), chemical (stored in molecules), and others. When energy is converted from one form to another, it follows the law of conservation of energy, which states that energy cannot be created or destroyed, only converted from one form to another.
In this case, when the woman runs, she converts the mechanical energy from her muscles into motion, propelling her forward. As she moves, friction between her feet and the ground, as well as air resistance, causes some of the mechanical energy to be converted into thermal energy. This is known as molecular friction, where the motion of molecules in the air increases, leading to an increase in temperature.
So, the correct answer is: Mechanical energy changes into thermal energy because the energy from motion creates heat in the air around the runner.