Question

I don't understand how I would know what would happen if it collided or bounced, etc. How do I solve a question like this? Suppose the total momentum of two masses before collision is 100kg m/s. What is the total momentum of the two masses after they collide?
0 kg m/s
50 k m/s
100 kg m/s
200 kg m/s

Answer 1

There is one thing you can really count on, Newton's First Law.

If there is no external force on a system, the momentum remains CONSTANT

Momentum before = Momentum after. If I could underline that PERIOD I would do so.

You can not count on mechanical energy being the same before and after.It could be turned into heat or radiation or whatever. You can use energy before and after only if the collision is elastic. However you can bet on Momentum every time.

Answer 2

Momentum after = Momentum before. Even when you get to relativity !

Answer 3

1.100 kg m/s
2.100 kg m/s
3.When there is more mass, there is more inertia
4.The jellyfish will move forward
5.a 61 kg zebra running at 8.0 m/s
6.3N
7.It has a high amount of inertia
8.The total momentum after the collision is the same momentum before the collision
You welcome :) -)_(-

Answer 4

1.C
2.D
3.C
4.A
5.D
6.B
7.C
8.A
100% Connexus students!! (Momentum Quiz)
Hope this helps!