Question

Express average velocity when the velocity of a body changes at non-uniform rate and a uniform rate.

Answer 1

When the velocity of a body changes at a non-uniform rate, its average velocity is found by dividing the net displacement covered by the total time taken. i.e. Average velocity\text{=}\frac{\text{Net}\,\text{displacement}}{\text{Total}\,\text{time}\,\text{taken}} In case the velocity of a body changes at a uniform rate, then the average velocity is given the arithmetic mean of initial velocity and final velocity for a given period of time. i.e.. Average velocity \text{=}\frac{\text{Initial}\,\text{velocity+final}\,\text{velocity}}{\text{2}}