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Trolley A, of mass 180 g, is moving at a velocity of 4 m/s towards trolley B
which is stationary and has a mass of 120 g. Trolley A then collides with
trolley B.
Calculate the speed of trolley B if:
i the collision is elastic (trolley A stops and trolley B moves off)

Answer :

NusrathCgo

Answer:

To solve typical questions like this we can use law of conversation of linear momentum...which is

T.I.L.M.=T.F.L.M.

(Total initial linear momentum = total final linear momentum.)

Momentum = mass × velocity

T.I.L.M = T.F.L.M

180×4 + 120×0 = 180×0 + 120×V

(180 ×4)/120 = V

6Ms^-1 = v

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