A projectile is thrown from level ground at some angle `theta` with speed u. The ratio of kinetic energy at point of projection to kinetic energy at point of landing for projectile is

A particle is projected from ground at an angle theta with horizontal with speed u. The ratio of radius of curvature of its trajectory at point of projection to radius of curvature at maximum height is -

The kinetic energy of a projectile at the highest point is-

A projectile is thrown with a velocity u_(0) at an angle theta with the horizontal. The ratio of the rate of change of speed w.r.t. time, at highest point to that at the point of projection, is

A projectile is fired from level ground at an angle theta above the horizontal. The elevation angle phi of the highest point as seen from the launch point is related to theta by the relation.

projectile is fired from ground at an angle theta with horizontal. The elevation angle phi of heighest point as seen from launch point is related by the relation-

A projectile is thrown from ground at a speed v_(0) at an angle alpha to the horizontal. Consider point of projection as origin, horizontal direction as X axis and vertically upward as Y axis. Let t be the time when the velocity vector of the projectile becomes perpendicular to its position vector. (a) Write a quadratic equation in t. (b) What is the maximum angle a for which the distance of projectile from the point of projection always keeps on increasing? [Hint: Start from the equation you obtained in part (a)]

A particle is projected from the ground with a kinetic energy E at an angle of 60° with the horizontal. Its kinetic energy at the highest point of its motion will be

A body is projected horizontally with a velocity of u ms^(-1) at an angle theta with the horizontal. The kinetic energy at the highest point is (3)/(4)th of the kinetic energy. The value of theta is :

A particle of mass m is projected with an initial velocity U at an angle theta to the horizontal. The torque of gravity on projectile at maximum height about the point of projection is