The ratio of kinetic energies of two bodies of same mass is 4 : 9, the ratio of their velocities will be

An object of mass 2000 g possesses 100 J kinetic energy. The object must be moving with a speed of

Which physical quantity is represented by the ratio of momentum and velocity of the body?

If an object of mass 10 kg is moving with a uniform speed of 10 m/s, then the linear momentum and the kinetic energy of the object, respectively, are

The unit of the ratio between thrust and impulse is same as that of

The energy of wind is –