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.
Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion.
Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion.
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.
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.
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The correct answer is: Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion.
The correct answer is:
Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner’s motion.
The correct answer is:
Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner's motion.
To understand why this is the correct answer, let's break it down:
The question is asking about the main energy conversion that occurs when a woman runs. This means we need to identify the initial form of energy and the final form of energy.
When a person runs, their body needs energy to perform the physical activity. This energy is obtained from the food they consume, which contains chemical potential energy. The digestion process breaks down the food and releases the stored energy in the form of ATP (adenosine triphosphate), which is used as a source of energy for the body's cells.
This chemical energy from food is then converted into mechanical energy in the muscles. As the woman runs, the muscles contract and generate the motion needed for running. This conversion of chemical energy into mechanical energy allows the woman to move her body and perform the running activity.
Therefore, the correct answer is: Chemical energy changes into mechanical energy because energy from digestion of food provides energy for the runner's motion.