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:

By momentum conservation:-

4V=12×4

V=12m/sec

KE=

2

1

×4×(12)

2

=288J