Question

A force of 10 N stops a ball of mass 20g moving at a speed of 2m/s. For how long the force need to be applied to stop the moving object?

Answer 1

• The three equations of motion
• v = u + at;
• s = ut + (1/2) at square
• and v square = u square + 2as

can be derived with the help of graphs as described below. Consider the velocity – time graph of a body shown in the below Figure. Velocity – Time graph to derive the equations of motion.