Yash Baheti
Last Activity: 10 Years ago
Hi,
As the mass projected upwards so after five seconds its velocity will be 50 m/s upwards and its momentum will be 50 in upward direction.
As the mass explodes and masses are divided into 2 parts of 600 and 400 gms.
As one part is moving downwards other one will move upwards.
So applying principle of conservation of momentum :
50 = (.6)v-(.4)25 which gives v=100. I.e the other part (600gms) will move upwards with a velocity of 100 m/s.