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15 February, 22:24

A trolley of mass 200kg is travelling north at 2m/s. It collides head on with a second trolley of mass 500kg which is travelling south with a velocity of 5 m/s and they remain coupled together.

a) calculate the velocity of the two trolleys after collision.

b) what is the direction of motion of the trolley after collison?

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  1. 16 February, 02:01
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    200*2N+500*5S = (700) V

    400N-2500N=700V

    solve for V. A negative N means S
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