A target situated on a hill can be seen from the foot at angle α above the horizontal .The distance of the target along the horizonal is R. if a shell is fired from the foot at an angle β with the horizontal, find the velocity required for it to strike the target. A projectile [...]

Two particles are simultaneously projected in the same vertical plane from the same point with velocities u and v at angles αandβ with horizontal. Find the time that elapses when their velocities are parallel. A projectile is required to hit a target whose coordinates relative horizontal and vertical axes through the point of projection are [...]

A projectile is required to hit a target whose coordinates relative horizontal and vertical axes through the point of projection are (α,β). If the gun velocity is 2gα ​ , it is impossible to hit the target if A projectile is required to hit a target whose coordinates relative horizontal and vertical axes through the [...]