A student is studying the motion of a particle along a straight line.
a. (i) Define average velocity of the particle for a finite time interval.
b. (ii) Define instantaneous velocity of the particle at a specific instant.
c. (iii) State any two differences between the two quantities defined in parts (i) and (ii).
d. (iv) With the help of a neat labelled sketch of a displacement–time graph, explain how instantaneous velocity can be obtained graphically.