An isolated particle of mass m is moving in horizontal plane along the x - axis at a certain height above the ground. It suddenly explodes into two fragments of masses `m/4` and `(3m)/4`. At an instant the smaller fragment is `y=+15 cm` . The larger fragment, at this instant is at

Explanation

As `vecF_(y)=0, DeltavecP_(y)=0, vecP_(y) = vecP_(yf)`

`vecP_(yi) =0, therefore m_(i) vecV_(y) + m_(2) vecV_(y2)=0, m_(1)vecy_(1) =-m_(2)vecy_(2)`
`y_(2) =-(m/4 xx 15)/(3m//4), y_(2) = -5 cm`