p1 = p2
m1*V1 = m2*V2
50kg*5m/s = (50kg+70kg)*x
250kg*m/s = 120kg*x |:120kg
x = 2i1/12 m/s
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p1 = p2
m1*V1 = m2*V2
50kg*5m/s = (50kg+70kg)*x
250kg*m/s = 120kg*x |:120kg
x = 2i1/12 m/s