If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

### Course: Mechanics (Essentials) - Class 11th>Unit 8

Lesson 3: Can you push a car from inside?

# Conservation of momentum

Let's learn one of the most powerful principles of physics, the conservation of momentum with some examples. Created by Mahesh Shenoy.

## Want to join the conversation?

• what happens when both bodies stick together, rather than separate? Is the formula different and how does that affect the momentum?
• The conservation of momentum formula is m1u1+m2u2=m1v1+m2v2 and there is a reaction force acting on the 2 bodies of different masses but in the case bodies sticking together there will be a single body with combined mass of the 2 bodies.Hence the new formula for conservation of momentum in case of bodies sticking together will be m1u1+m2u2=(m1+m2)v