# Review of Mechanical Energy and Momentum Equations and When To Use Them!

- 464 views
- 0 comments

By the time students learn about all the equations for mechanical energy, momentum, impulse and impact force, they often start to confuse the equations with one another. This is a straightforward, simple look at all of those equations and when to use them.

This is an AP Physics 1 Topic. Want Lecture Notes?

Content Times:

0:14 Tacky Sweater Day!

0:22 Conservation of Mechanical Energy

0:54 Work due to Friction equals Change in Mechanical Energy

1:30 Net Work equals change in Kinetic Energy

3:01 Conservation of Momentum does NOT require the work due to friction to be zero

3:28 The initial and final points when dealing with momentum are predetermined

3:56 Impulse does not equal Impact Force

Thank you to Sophie Jones and her family for letting me use six of their sweaters in this video!

Next Video: 2D Conservation of Momentum Example using Air Hockey Discs

Multilingual? Please help translate Flipping Physics videos!

Previous Video: Impulse Comparison of Three Different Demonstrations

Please support me on Patreon!

Thank you to my Quality Control help: Christopher Becke, Scott Carter and Jennifer Larsen

## Recommended Comments

## Comments

There are no comments to display.

## Create an account or sign in to comment

You need to be a member in order to leave a comment