List of top Geophysics Questions on Work, Energy and Power

A rocket motor consumes \(3000\ \text{kg}\) of fuel per minute exhausting it with a speed of \(5\times10^3\ \text{m/s}\). The magnitude of force exerted on rocket is:

Which of the following is/are correct about conservative and non-conservative forces?
(A) For conservative and non-conservative forces conservation of energy holds good.
(B) Friction is a conservative force.
(C) The work done by a conservative force in a closed path is zero.
(D) Friction is a non-conservative force.
Choose the correct answer from the options given below: