Work, Energy and Power-Potential Energy (NEET Physics): Questions 1 - 4 of 11

The potential energy between two atoms in a molecule is given by, where a and b are positive constant and x is the distance between the atoms. The atoms is an stable equilibrium, when-

If g is the acceleration due to gravity on the earth’s surface, the gain in the potential energy of an object of mass m raised from surface of the earth to a height equal to radius R of the earth is - [M = mass of earth]

A body of mass m moving with a velocity v ₁ in the X-direction collides with another body of mass M moving in Y-direction with a velocity v ₂. They coalesce into one body during collision. The magnitude and direction of the momentum of the final body, will be-

A tennis ball dropped from a height of 2 m rebounds only 1.5 f meter after hitting the ground. What fraction of energy is lost in the impact?