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What is meant by the statement that the power of an electric heater is 1200W? What happens to the kinetic energy when the
velocity of a moving body is doubled?

Sagot :

asuwafohjames

The statement the power of an electric heater is 1200 W means that the electric heater used up 1200 J of electric energy in one second.

When the velocity of a moving body is doubled, its kinetic energy will become four times its initial kinetic energy.

What is power?

Power is the rate at which energy is used up. The s.i unit of power is Watt (W).

From the question, if an electric heater is 1200 W, it means that the electric heater used up 1200 J of electric energy in one second

What is kinetic energy?

Kinetic energy is the energy of a body in motion.

The formula for the kinetic energy of a body is given as

  • K.E = mv²/2

From the equation above, it can be seen that if the velocity of a moving body is doubled, the kinetic energy of the body will become four times the initial kinetic energy of the body.

Hence, The statement the power of an electric heater is 1200 W means that the electric heater used up 1200 J of electric energy in one second.

When the velocity of a moving body is doubled, its kinetic energy will become four times its initial kinetic energy.

Learn more about electric power here: https://brainly.com/question/24858512

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