JEE Main 20 July 2021 Shift 1 Solved Paper

In a spring gun having spring constant 100N∕m a small ball 'B' of mass 100g is put in its barrel (as shown in figure) by compressing the spring through 0.05m. There should be a box placed at a distance 'd' on the ground so that the ball falls in it. If the ball leaves the gun horizontally at a height of 2m above the ground. The value of d is m.
(g=10m∕s2)