Numerical Problems 3.1 A force of 20 N moves a body with an acceleration of 2 ms – 2 . What is its mass? (10kg) Solution: Force = F = 20 N Acceleration = a = 2 ms – 2 Mass = m = ? F = ma...

Short Answers Q.1 Define the following terms: (i) Inertia (ii) Momentum (iii) Force (iv) Force of friction (v) Centripetal force Ans: (i) Inertia: The inertia of a body is its property due to which it any change in...

Notes Q1. Define dynamics? Ans: Dynamics: The branch of mechanics that deals with the study of the motion of an object and the cause of its motion is called dynamics. Q2. Define Force. Ans: Force: A force moves or tends to move...