A stone,projected up vertically with a velocity v ,reaches points P ,Q ,R in its path with velocities `(v)/(sqrt(2))`,`(v)/(sqrt(3))`,`(v)/(sqrt(4))`, respectively. Find the ratio PQ:QR .

Three particles are projected vertically upward from a point on the surface of earth with velocities v_(1)=sqrt((2gR)/(3)),v_(2)sqrt(gR),v_(3)sqrt((4gR)/(3)) respectively, where g is acceleation due to gravity on the surface of earth. If the maximum height attained are h_(1),h_(2) " and " h_(3) respectively, then h_(1):h_(2):h_(3) is

A stone projected vertically up with velocity v from the top of a tower reaches the ground with velocity 2 v The height of the tower

A stone projected vertically up with velocity v from the top of a tower reaches the ground with velocity 2v .The height of the tower is

v_(e)=sqrt((2GM)/(R))

The velocity of particle is given by v=sqrt(gx) . Find its acceleration.

Calculate the acceleration of an object if its velocity is given by v=(1)/(2)(sqrt(12x+24))

Two particles A and B projected simultaneously from a point situated on a horizontal place. The particle A is projected vertically up with a velcity v_(A) while the particle B is projected up at an angle 30^(@) with horizontal with velocity v_(B) . After 5s the particles were observed moving mutually perpendicular to each other. The velocity of projection of the particle v_(A) and v_(B) respectively are:

A body is projected vertically up with velocity u from the ground in the presence of constant air resistance R of it reaches the ground with a velocity 'V' then time of descent

In fig., blocks A and B move with velocities v_(1) and v_(2) along horizontal direction. Find the ratio of v_(1)//v_(2)