Is an athlete running a kinetic energy?

Answer 1

To walk you need to expend mechanical energy in forcing your body forwards through forcing your leg muscles to react with the ground through your feet. Your muscles obtain the energy from chemical reactions within your body, and ultimately from the food you have digested.

Answer 2

Yes, everything with a speed and a mass has kinetic energy.

This can be calculated with the formula: E = 0.5 * m * v^2

For example, if you weigh 75 kilograms and walk with a speed of 2 meters per second,

you would have a kinetic energy of 150 joules.

Just to put this in perspective, to warm a cup of coffee (250 grams from 25 C to 75 C) you need 52,000 joules.

Answer 3

Original answer: running person

**************

It depends on mass AND speed.

Since energy is directly tied to MASS, then it all depends on the MASS * VELOCITY to figure which has more KINETIC ENERGY. To figure the kinetic energy in an object take 1/2 times the mass of the object times the square of the speed of the object.

.5 * Mass * Velocity^2 = Energy in joules

A running person has weighs 75 kilos and is running at a velocity of 2 meters per second would have a kinetic energy of 150 joules.

Thus, a small person weighing 50kg moving at 2 meters per second would = 100 joules of energy.

A large person weighing 200kg moving at 1 meter per second would also = 100 joules of energy.

Thus, a smaller/lighter item always has to travel faster than a larger/heavier item to produce the same or more kinetic energy.

An object weighing 1/4th the mass of something must travel at twice the speed to have the same energy.

200 mass, 10 velocity = 10,000 energy

is the same as:

50 mass, 20 velocity = 10,000 energy.

Answer 4

A person converts chemical potential energy into kinetic/mechanical energy when he walks. The chemical potential energy usually takes the form of adenine triphosphate (ATP) stored in the body.

Answer 5

"chemical" energy.

Everything humans do depends on chemical energy.

Answer 6

Kinetic if you are just walking, if you plan on running it would be potential until you actually start running

Answer 7

While you walk, the potential energy stored in your body's cells is converted into the kinetic energy of motion.

Answer 8

kinetic energy