A particle of mass `200 g` is dropped from a height of `50 m` and another particle of mass `100 g` is simultaneously projected up from the ground along the same lime, with a speed of `100 m//s`. The acceleration of the centre of mass after `1 sec` is.

A particle of mass 2m is dropped from a height 80 m above the ground. At the same time another particle of mass m is thrown vertically upwards from the ground with a speed of 40 m/s. If they collide head-on completely inelastically, the time taken for the combined mass to reach the ground, in units of second is:

A particle of mass 2m is dropped from a height 80 m above the ground. At the same time another particle of mass m is thrown vertically upwards from the ground with a speed of 40 m/s. If they collide head-on completely inelastically, the time taken for the combined mass to reach the ground, in units of second is:

A particle of mass m is dropped from a height h above the ground. At the same time another particle of mass 2m is thrown vertically upwards from the ground with a speed of sqrt(gh) . If they collide head-on completely inelastically, the time taken for the combined mass to reach the ground, in units of sqrt(h/g) is:

A particle of mass m is dropped from a height h above the ground. At the same time another particle of mass 2m is thrown vertically upwards from the ground with a speed of sqrt(gh) . If they collide head-on completely inelastically, the time taken for the combined mass to reach the ground, in units of sqrt(h/g) is :

A particle of mass m is dropped from a height h above the ground. At the same time another particle of mass 2m is thrown vertically upwards from the ground with a speed of sqrt(gh) . If they collide head-on completely inelastically, the time taken for the combined mass to reach the ground, in units of sqrt(h/g) is :

A stone of mass 500g is dropped from the top of a tower of 100m height. Simultaneously another stone of mass 1 kg is thrown horizontally with a speed of 10 m s^(-1) from same point. The height of the centre of mass of the above two stone system after 3 sec is ( g = 10 m s^(-2) )

A stone of mass 500g is dropped from the top of a tower of 100m height. Simultaneously another stone of mass 1 kg is thrown horizontally with a speed of 10 m s^(-1) from same point. The height of the centre of mass of the above two stone system after 3 sec is ( g = 10 m s^(-2) )