A particle I projected at an angle of elevation `alpha` after time `t` it makes an angle `beta`with horizontal. The velocity of projection is

A particle is projected at an angle of elevation alpha and after t second it appears to have an elevation of beta as seen from the point of projection. Find the initial velocity of projection.

A particle is projected at an angle of elevation alpha and after t second it appears to have an elevation of beta as seen from the point of projection. Find the initial velocity of projection.

A particle is projected with an initial velocity u, making an angle theta with the horizontal. Find the equation of the trajectory of the particle at any instant after the projection. Find expressions for the maximum height gained by the particle and its horizontal range.

A particle is projected in air with an initial velocity u directed at an angle theta above horizontal. After time t_(0) the velocity of the particle is directed at angle phi above horizontal.

A particle is projected up an inclines plane. Plane is inclined at an angle theta with horizontal and particle is projected at an angle alpha with horizontal. If particle strikes the plane horizontally prove that tan alpha=2 tan theta

A particle is projected up an inclines plane. Plane is inclined at an angle theta with horizontal and particle is projected at an angle alpha with horizontal. If particle strikes the plane horizontally prove that tan alpha=2 tan theta