Question

A body of mass M at rest explodes into three pieces, in the ratio of masses 1 : 1 : 2. Two smaller pieces fly off perpendicular to each other with velocities of 30 ms^-1 and 40 ms^-1 respectively. The velocity of the third piece will be : 

(A) 15 ms^-1 

(B) 25 ms^-1 

(C) 35 ms^-1 

(D) 50 ms^-1

Answer 1

Correct option is (B) 25 ms^-1 

Mass of pieces by M/4, M/4, M/2

conserving momentum