Correct Answer: Perpendicular to the direction of applied force
4. ___________ states that internal energy is a function of state and the increase in internal energy is equal to the sum of the heat supplied to system and work done by the system.
8. A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).