# Need some help on kinectic energy

• harvoh126
In summary, the conversation discusses a problem involving expressing kinetic energy in terms of momentum and proving the fractional loss during a collision using symbols. The person has spent over an hour on the problem and still cannot figure it out. They are asked to show work and post in the appropriate forum.

#### harvoh126

I spent about over an hr for this problem and still can't figure it out. :yuck:

expressing the kinetic energy in terms of momentum (k= 1/2^2mv=p^2/2m) prove using symbols not numbers that the fractional loss during the collision is equal to M/(m+M).

harvoh126 said:
I spent about over an hr for this problem and still can't figure it out. :yuck:

expressing the kinetic energy in terms of momentum (k= 1/2^2mv=p^2/2m) prove using symbols not numbers that the fractional loss during the collision is equal to M/(m+M).

This can't be the whole of the problem. What collision?

Please show some work, when you post homework problems. You must show some work in order to receive help according to the rules of the forum.

Where exactly in this problem are you getting stuck?

Also, please post homework problems in the Homework help forum.

## 1. What is kinetic energy?

Kinetic energy is the energy an object possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

## 2. How is kinetic energy calculated?

Kinetic energy is calculated using the formula KE = 1/2 * m * v^2, where m is the mass of the object and v is its velocity.

## 3. What is the relationship between mass and kinetic energy?

The kinetic energy of an object is directly proportional to its mass. This means that as the mass of an object increases, its kinetic energy also increases.

## 4. How does kinetic energy relate to potential energy?

Kinetic energy and potential energy are two forms of mechanical energy. Kinetic energy is the energy of motion, while potential energy is the energy that an object possesses due to its position or state. The total mechanical energy of an object is the sum of its kinetic and potential energies.

## 5. Can kinetic energy be converted into other forms of energy?

Yes, kinetic energy can be converted into other forms of energy, such as thermal energy, sound energy, or electrical energy. This is the principle behind many energy conversion processes, such as generators and turbines.