m = 1kg,
M=5 kg and
The total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.
From conservation of momentum
Initial momentum = final momentum
mu1 + Mu2 = (m+M)v
1×10 + 5×0 = (1+5)v
Hence, the velocity of both is v =5/3ms−1
Total momentum before is 10 kgms−1
From momentum conservation, total momentum after is 10kgms−1.