Two blocks of mass 4 kg and 6 kg are placed in contact with each other on a frictionless horizontal surface. If we apply a push of 5N on the heavier mass, the force on the lighter mass will be

A parachutist of weight w strikes the ground with his legs fixed and comes to rest with an upward acceleration of magnitude 3g. Force exerted on him by ground during landing is

A body climbing up with a speed v an inclined plane having inclination 300 and stops at a

distance of 17.3m. Now if the angle of inclination be 600, then the distance will it go along

the inclined plane with the same speed is

V

Two masses m and M are connected by a light string passing over a smooth pulley. When the system set free m moves up by 1.4 m in 2 s. The ratio m/M is