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Question
A bomb of mass 9 kg explodes into the pieces of masses 3 kg and 6kg. The velocity of mass 3 kg is 16 m/s. The kinetic energy of mass 6 kg in joule is :
A bomb of mass 9 kg explodes into the pieces of masses 3 kg and 6kg. The velocity of mass 3 kg is 16 m/s. The kinetic energy of mass 6 kg in joule is :
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Solution
The correct option is C 192
Total momentum just before collision is equal to the total momentum just after collision.
0=m1v1+m2v2
v2=−m1v1m2=−3(16)6=−8m/s
KE of 6kg particle=0.5(6)(8)2=192J
Option C.
Total momentum just before collision is equal to the total momentum just after collision.
0=m1v1+m2v2
v2=−m1v1m2=−3(16)6=−8m/s
KE of 6kg particle=0.5(6)(8)2=192J
Option C.
Option C.
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