A 6.0-kg object moving 5.0 m/s collides with and sticks to a 2.0-kg object. after the collision the composite object is moving 2.0 m/s in a direction opposite to the initial direction of motion of the 6.0-kg object. determine the speed of the 2.0-kg object before the collision.

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19 August, 22:44

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Sidney Chen · Answer 1

m1v1 + m2v2 = (m1+m2) * (-vf)

6*5 + 2*v2 = (6 + 2) * (-2)

v2 = - 16/2 = - 8 m/s i