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ROMAR
Answers (1)
Conservation of momentum: total momentum before = total momentum after Momentum = mass x velocity So before the collision: 4kg x 8m/s = 32 1kg x 0m/s = 0 32+0=32 Therefore after the collision 4kg x 4.8m/s = 19.2 1kg x βm/s = β 19.2 + β = 32 Therefore β