A particle is observed to move along a straight line with its velocity changing…
PHYSICS · Multi-part · CBSE · Physics · Motion in a Straight Line · Motion in a Straight Line
Problem
A particle is observed to move along a straight line with its velocity changing irregularly with time. Answer the following questions based on this motion:
(i) Define (a) average acceleration and (b) instantaneous acceleration.
(ii) Describe with the help of a velocity–time graph how each of the above accelerations can be obtained graphically.
(iii) During a particular interval the velocity of the particle rises uniformly from 5ms−1 to 20ms−1 in 3.0s. Calculate the average acceleration for this interval. Would this numerical value necessarily be equal to the instantaneous acceleration at t=1.5s? Give reason for your answer.