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Before colliding the momentum of block A is +15.0 kg*m/s, and block B is -35.0 kg*m/s. after, block A has a momentum -12.0 kg*m/s. what is the momentum of block B afterwards?(unit=kg*m/s) remember: right is +, left is - PLEASE HELP ME

Respuesta :

opudodennis

Answer:

-8 Kgm/s

Explanation:

From conservation of linear momentum, the sum of momentum before collision is equal to the sum of linear momentum after collision

The sum of momentum before collision is 15+-35=-20 Kgm/s

Momentum after collision is

x+-12=-20

x=-20+12=-8 Kgm/s

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