UPSC 2014 CDS I GK Paper

In cricket match, while catching a fast-moving ball, a fielder in theground gradually pulls his hands backwards with the moving ball toreduce the velocity to zero. The act represents Newton's second law ofmotion. Newton's second law of motion states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force. i.e., F = ma. Where F is the force applied, m is the mass of the body, and a, the acceleration produced.