In gravitational units ,units of force in M.K.S system  is

A person swimming in a fresh water pool obeys

The sparks produced during sharpening of a knife against a grinding wheel leaves the rim of the wheel tangentially. This is due to ________.

If the smoothness of the surfaces in contact increases, the frictional force opposing the motion

What is the momentum of a man of mass 100 kg when he walks with a uniform velocity of 2 m/s?

Units of force in   M.K.S or S.I system

If  a number of bodies collide with one another the total momentum of the bodies, just before collision is equal to the total momentum just after collision .This is the

Unit of force in C.G.S system

________of a body is defined as the product of its mass (m) and its velocity (v).

If the gravitational force acting on a body is nullified by another force ,the resultant  force becomes