JEE Main 2013 Physics question
A ball projected from ground at an angle of 45° just clears a wall in front. If point of projection is 4 m from the foot of wall and ball strikes the ground at a distance of 6 m on the other side of the wall, the height of the wall is :
Answer: (2)
Solution
Range R = 4 + 6 = 10 m. At 45° the trajectory is , so at x = 4 m: m, option (2).