# Energy and Momentum

1. Jan 17, 2007

### physics_geek

1. The problem statement, all variables and given/known data
just a very basic question...how is energy related to momentum

2. Relevant equations

3. The attempt at a solution
im not sure but i think the answer is that they both have something to do with work..can someone help clarify..thanks

2. Jan 17, 2007

### physics_geek

umm hello..anyone?

3. Jan 17, 2007

### physics_geek

does like nobody no the answer?

4. Jan 17, 2007

### gabee

What is the formula for momentum, and what is the formula for kinetic energy?

5. Jan 19, 2007

hi

Momentum = mv (mass x velocity)

Potential energy = mg∆h (mass x acceleration due to gravity x ∆ height)
Kinetic energy = 1/2 mv^2 ( 1/2 x mass x velocity squared)

work done = force x distance travelled in the direction of the force

since work done is energy

it follows that energy = force x distance

maybe you can derive a relationship from the information above

hope that helped

6. Jan 19, 2007

### curly_ebhc

I am adding on that you may want to consider the Impulse-Momentum Theorum (it should make it easier to deal with force)