A body is projected up along the rough inclined plane from the bottom with some velocity. It travels up the incline and then returns back. If the time of ascent is `t_(a)` and time of descent is `t_(d)` then

The relation between time of ascent t_a and time of descent t_d is

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 block is projected upwards on a rough inclined plane at 20 m/s. let the time in going up, then is equal to

A block is projected upwards on a rough inclined plane at 20 m/s. let the time in going up, then is equal to

(a) A block slides down an incline of angle 45^(@) with an acceleration (g)/(2 sqrt(2)) . Find the friction coefficient. (b) A block slides down at 45^(@) inclined plane in twice the time it takes to slide down a smooth 45^(@) incline. What is friction co-efficient between the block and the incline? ( c) A block slides down on a rough inclined plane of inclination 30^(@) with constant velocity. If this block is projected up the plane with a velocity of 10 m//s , then at what distance along the inclined plane , the block will come to rest? (d) A body is launched up on a rough inclined plane of inclination theta . If time of ascent is half of time of descent, find the friction coefficient.

A body is projected up along a rough inclined plane of inclination 45 ^@ . The coefficient of friction is 0.5. Then the retardation of the block is

A body is projected up along an inclined plane from the bottom with speed is 2v .If it reaches the bottom of the plane with a velocity v ,if theta is the angle of inclination with the horizontal and mu be the coefficient of friction.

A mass A is released from the top of a frictionless inclined plane 18 m long and reaches the bottom 3 sec later. At the instant when A is released, a second mass B is projected upwards along the plane from the bottom with a certain initial velocity. The mass B travels a distance up the plane, stops and returns to the bottom so that it arrives simultaneously with A. The two masses do not collide. Find the acc. and initial velocity of B. (How far up the inclined plane does B travel?)