**MOMENTUM**

Momentum

- is the product of mass and velocity.

The law of conservation of momentum...

Conservation of momentum is the law that states the total momentum before a collision is equal

to the total momentum after a collision

So why do we care about momentum?

WE CARE BECAUSE MOMENTUM EFFECTS EVERY OBJECT MOVING OR NOT

For example. Say a 1kg ball is going 5 m/s (white), and hits another 1 kg ball going 0m/s(yellow). The momentum of the first ball will be transfered to the second ball

the equation for this is M1V1+M2V2=(M1+M2)Vf

*You add the masses "after the collision" because they stuck together and travel with the same speed. *

**Lets talk about the types of collisions...**

Collision type 1 is when one moving object hits a stationary object and both stick together and move at the same speed.

Collision type 2 is when two objects

collide and they bounce off each other. This transfer of momentum causes objects to move in different directions.

Collision type 3 is when one moving object hits a stationary object . The first object stops, transfers all of its momentum to the second object, and the second object moves off

collision type 4 is when one moving object hits a stationary object and they both move off at different speeds

5m/s

2m/s

3m/s

More mass

More mass

less mass

less mass

Collision type 5 is when two moving objects collide and move off at different speeds

More mass

More mass

less mass

less mass

5m/s

5m/s

6m/s

4m/s

Lastly, collision type six is when two moving objects collide, stick together, and move off at the same speed.

5m/s

1m/s

6m/s

Do Now: Make a list of 5 things that you think may have momentum and 5 things

that don't have momentum.

Therefore, the more mass and velocity an object has, the more momentum it has.

The formula for momentum (P) is:

P= M x V

What is the momentum of

an ostrich with a mass of

120 kg that runs with a veocity

of 16 m/s north

This law applies whether the objects stick together or bounce off

each other after they

collide

relate Newton's 3rd law

to momentum

1. If the truck has a mass of 2,000 kilograms, what is its momentum? (v = 35 m/s) Express your answer in kg•m/sec.

An 8-kilogram bowling ball is rolling in a straight line toward you. If its momentum is 16 kg•m/sec, how fast is it traveling?

What is the

mass?