Solve the previous problem if the coefficient of restitution is e. Use θ = 45°, and h = 5 m.
Angle of inclination on the plane is Ө=45˚,
The body falls through the height h = 5 m,
Acceleration due to gravity g = 10 m/s,
The striking velocity of the projectile with the inclined plane is
After collision, let it make an angle θ with horizontal. The horizontal component of velocity 10 cos45°= v cos Ө˚ will remain unchanged and the velocity in the perpendicular direction to the plane after collision will be
So,
Angle of reflection from the wall
Angle of projection will be
Let the distance where it falls is l
From equation of trajectory
Putting values, we get
On solving above, we get
Thus, it will hit the plane again at 18.5 m along the incline.