Question
Question: A bomb of mass 9 kg explodes into two parts. One part of mass 3 kg moves with velocity 16 m/s, the k...
A bomb of mass 9 kg explodes into two parts. One part of mass 3 kg moves with velocity 16 m/s, the kinetic energy of the other part is :
A
192 J
B
200 J
C
300 J
D
400 J
Answer
192 J
Explanation
Solution
From momentum conservation principle
0 = 3(16) + 6
̃ 
= (–8) m/s
and K2 = 1/2 m2v22 = 1/2 × 6×(–8)2 = 192 J