A large wedge BCD, having its inclined surface at an angle `theta = 45^(@)` to the horizontal, is travelling horizontally leftwards with uniform velocity `u = 10 m//s `

At some instant a particle is projected vertically up with speed `V = 20 m//s` from point A on ground lying at some distance right to the lower edge B of the wedge. The particle strikes the incline BC normally, while it was falling. `[g = 10 m//s^(2)]`
(a) Find the distance AB at the instant the particle was projected from A.
(b) Find the distance of lower edge B of the wedge from point A at the instant the particle strikes the incline.
(c) Trace the path of the particle in the reference frame attached to the wedge.

Answer

(a) `15 m` (b) 15 m (c) parabolic