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# How do you work the kinetic energy theorem?

## How do you work the kinetic energy theorem?

W net = K B − K A . W net = K B − K A . According to this theorem, when an object slows down, its final kinetic energy is less than its initial kinetic energy, the change in its kinetic energy is negative, and so is the net work done on it. If an object speeds up, the net work done on it is positive.

## What is the formula of energy theorem?

According to the work-energy theorem, the net work on an object causes a change in the kinetic energy of the object. The formula for net work is net work = change in kinetic energy = final kinetic energy – initial kinetic energy.

What is kinetic energy momentum theorem?

Explanation: The kinetic energy of a body is the ratio of the square of the momentum and the twice of the mass of that body. Momentum of a body is the product of its mass and velocity.

What is work-energy theorem and prove it?

Work energy theorem states that the work done by the net force acting on a body is equal to the change produced in the kinetic energy of the body. Δ W = F ( x ) Δ x.

### What states work-energy theorem?

The work-energy theorem states that the net work done by the forces on an object equals the change in its kinetic energy.

### What is the derivation of kinetic energy?

The word Kinetic energy came from the French word travail mécanique (mechanical work) or quantité de travail (quantity of work). The kinetic energy of a body is the energy possessed by the body by virtue of its motion.

What do you mean by work energy theorem?

Is kinetic energy in joules?

Unlike velocity, acceleration, force, and momentum, the kinetic energy of an object is completely described by magnitude alone. Like work and potential energy, the standard metric unit of measurement for kinetic energy is the Joule.

## How do you solve kinetic energy?

In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.