Work And Energy Mock Tests

A body of mass 1 kg moves in a straight line with velocity v = 3t m/s, where t is in seconds. The work done by the net force during the first 2 seconds of motion is:

A variable force F(x) = 12x N acts on a particle moving along the x-axis. The work done by this force in moving the particle from x = 1 m to x = 3 m is:

A constant force of 20 N does 500 J of work in moving a body through a distance of 25 m. The angle between the force and the direction of motion is:

A force F = (3x + 2) N acts on a particle moving along the x-axis from x = 0 to x = 2 m. The work done by the force is:

A body of mass 3 kg is thrown vertically upwards with a velocity of 20 m/s. What is its potential energy at the maximum height? (g = 10 m/s²)

Two bodies of masses m and 4m are moving with equal kinetic energy. The ratio of their momenta is:

A force F = (2i + 3j) N acts on a body and displaces it by s = (i - j) m. The work done by the force is:

An object of mass 2 kg has a kinetic energy of 100 J. What is its velocity?