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 - me

The momentum of block B = -8 Kg m/s

Explanation:

Given,

The initial momentum of block A, MU = 15 Kg m/s

The initial momentum of block B, mu = -35 Kg m/s

The final momentum of block A, MV = -12 Kg m/s

The final momentum of block B, mv = ?

Consider the block B is initially at rest.

According to the laws of conservation of linear momentum, the momentum of the body before impact is equal to the momentum of the body after impact.

                               MU + mu = MV + mv

                               15  +  (-35) = (-12) + mv

                                       mv = -20 + 12

                                             =  -8 Kg m/s

Hence, the momentum of the block B after impact is, mv = -8 Kg m/s

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energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this