A particle of mass 1 kg is thrown vertically upward with speed 100 m/s. After 5 sec it explodes into two parts. One part of mass 400 g comes back with speed 25 m/s, what is the speed of the other part just after explosion ? (g=10 m//s^(2))

A particle of mass 1 kg is thrown vertically upward with speed 100 m/s

1.	A particle of mass 1 kg is thrown vertically upward with speed 100 m/s. After 5 sec it explodes into two parts. One part of mass 400 g comes back with speed 25 m/s, what is the speed of the other part just after explosion ? (g=10 m//s^(2))
Answer» 600 m/s UPWARD 100 m/s upward 100 m/s down ward 300 m/s upward ANSWER :B