P, Q and R are three balloons ascending with velocities U, 4U and 8U respectively. If stones of the same mass be dropped from each, when they are at the same height, then

B_(1) , B_(2) , and B_(3) , are three balloos ascending with velocities v , 2v , and 3v , respectively, If a bomb is dropped from each when they are at the same height, then.

B_(1) , B_(2) , and B_(3) , are three balloos ascending with velocities v , 2v , and 3v , respectively, If a bomb is dropped from each when they are at the same height, then.

Three stones P, Q and R are projected vertically up with velocities u, 4u and 8u respectively from the top of a tower simultaneously Then (A) All stones reach the ground simultaneously (B) stone P reaches the ground first (C) stone Q reaches the ground first (D) stone R reaches the ground first

Two bodies P and Q are projected with velocites sqrt(2) u and u respectively. They cover the same horizontal distance. If body P is projected at 15^(@) will the horizontal, then calcu late the angle of projection of body Q.

The velocities of three molecules are 3u,4u and 5u, respectively. Then, rms speed will be

A body dropped from a height h with an initial speed zero, strikes the ground with a velocity 3km/h . Another body of same mass is dropped from the same height h with an initial speed -u' = 4km//h . Find the final velocity of second body with which it strikes the ground

A stone is dropped from a balloon ascending with v_0=2m/s , from a height h=4.8 m .Find the time of flight of the stone.

A stone is dropped from a balloon ascending with v_0=2m/s , from a height h=4.8 m .Find the time of flight of the stone.