A bomb of mass 15 kg at rest explodes into two pieces of masses 10 kg and 5 kg. The velocity of 10 kg mass is 6 ms–1. The kinetic energy of the other mass is :
Answer & explanation
Correct answer: option 4
Kinetic energy : \(K = \frac{P^2}{2m}\)
P = 10 kg x 6 m/s = 60 kg m/s ; m = 5 kg
K = 360 J