Question

A bomb at rest and of 10 kg explodes into two pieces of masses 6 kg and 4 kg respectively. The
mass of 4 kg moves away with a velocity of 12 ms-1

. The velocity of the other mass will be:

(A) 12ms-1

(B) 8ms-1

(C) 4ms-1

(D) 2ms-1

Answer 1

Answer:

ans a as you can think yourself force acts in equal and opposite rxn

Answer 2

Answer: D

Explanation: By momentum conservation:-

4V=12×4

V=12m/sec

KE=  

2

1

​

×4×(12)  

2

 

=288J

Option D.