A solid rubber ball of density `d` and radius `R` falls vertically through air. Assume that the air resistance acting on the ball is `F=KRV` where K is constant and V is its velocity. Because of this air resistance the ball attains a constant velocity called terminal velocity `v_(T)` after some time. Then `V_(T)`

A solid ball of density rho_(1) and radius r falls vertically through a liquid of density rho_(2) . Assume that the viscous force acting on the ball is F = krv , where k is a constant and v its velocity. What is the terminal velocity of the ball ?

A ball is thrown vertically with some velocity . A constant air resistance acts. If the time of ascent is t_(1) and that of descent is t_(2) , then

A person sitting in an open car moving at constant velocity throws a ball vertically up into air. The ball falls

A ball is thrown vertically upwards in air. If the air resistance can not be neglected (Assume it be directly proportionalto velocity) thenthe acceleration of the ball at the highest point will be :

A particle moves with an initial velocity V_(0) and retardation alpha v , where alpha is a constant and v is the velocity at any time t. Velocity of particle at time is :

A ball is thrown vertically upward with a velocity u from balloon descending with a constant velocity v. The ball will pass by the balloon after time

A small steel ball of radius r is allowed to fall under gravity through a column of a viscous liquid of coefficient of viscosity eta . After some time the velocity of the ball attains a constant value known as terminal velocity upsilon_T . The terminal velocity depends on (i) the mass of the ball m (ii) eta , (iii) r and (iv) acceleration due to gravity g . Which of the following relations is dimensionally correct?

A small spherical ball falling through a viscous medium of negligible density has terminal velocity v. Another ball of the same mass but of radius twice that of the earlier falling through the same viscous medium will have terminal velocity