A ball is thrown with a velocity of `u` making an angle `theta` with the horizontal. Its velocity vector normal to initial vector `(u)` after a time interval of

A stone is thrown up with a velocity u' whiwhich makes an angle theta with the horizontal.

For a projectile first with velocity u at an angle theta with the horizontal.

A projectile is fired with a velocity 'u' making an angle theta with the horizontal. Show that its trajectory is a parabola.

A particle is projected with a velocity u making an angle theta with the horizontal. At any instant its velocity becomes v which is perpendicular to the initial velocity u. Then v is

A particle is projected with a velocity u making an angle theta with the horizontal. At any instant its velocity becomes v which is perpendicular to the initial velocity u. Then v is

A particle is projected with a velocity u making an angle theta with the horizontal. At any instant its velocity becomes v which is perpendicular to the initial velocity u. Then v is

A ball is thrown with velocity 8 ms^(-1) making an angle 60^(@) with the horizontal.Its velocity will be perpendicular to the direction of initial velocity of projection after a time of