5.4 101 What is the kinetic Energy of the
maller fragment?
52103
B 10
3.5 x 10
DP2.5 x 100
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By momentum conservation.
m 1 v 1
=m 2 v 2
3v 1 =1v 2 →(1)
6×2×10 /4
=12v /12v/ 1
=100m/s
Momentum of smaller fragment = momentum of bigger.
=m 1
v1 =m 2 v 2
=3×100=300kg−m/s
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