Question

A 1,200 kg car is traveling at 140 km/h south. It strikes a 950 kg car traveling 75 km/h north. Ignoring any outside forces, what is the momentum of the system after the collision?

Answer 1

@triciaal @3mar

Answer 2

momentum = mass * velocity

I would use this formula to find the momentum of both cars, then find the DIFFERENCE of the momentum the 2 cars act upon each other during collision.

Answer 3

Well, I am here.
Sorry for late.

Answer 4

Just like what @mhchen says!

Answer 5

ok so this is what i got so for
car a
1200kg X 140km/h
1.68 x 10 ^5
car b
950 kg X 75km/h
7.12 x 10^4

now im not sure where to go after this

Answer 6

These cars are moving towards each other, i.e in the opposite direction not in the same direction.

ok?

Answer 7

yes

Answer 8

Can you add these momentum together?

Answer 9

@triciaal
Could you help here please?

Answer 10

these are my options

Answer 11

@3mar

Answer 12

I think it is D

Answer 13

can you please show me how though

Answer 14

@zepdrix
If you could help, thank you

Answer 15

@triciaal

Answer 16

i got it it is b thanks though