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3 years ago

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An object has a momentum of 55kg*m/s and hits a stationary object making the second object starts to move. If the first object e

nds with a moemntum of 13kg*m/s, what is the momentum of the second object?
Momentum = p
p = mass*velocity

1 answer:

Afina-wow [57]3 years ago

4 0

Let the moving object be object 1 and the stationary object be object 2.

Momentum of object 1 before collision = 55 kg*m/s

Momentum of object 2 before collision = 0 kg*m/s

Momentum of object 1 after collision = 13 kg*m/s

According to the law of conservation of momentum, the sum of the momenta of 2 objects remains the same even after collision. So,

Momentum of object 1 before collision + momentum of object 2 before collision = Momentum of object 1 after collision + momentum of object 2 after collision

55 + 0 = 13 + momentum of object 2 after collision

Momentum of object 2 after collision = 55 - 13 = 42 kg*m/s

Hope I helped!

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