Success is walking from failure to failure with no loss of enthusiasm. – Winston Churchill

In this lecture I am discussing average velocity, average speed, average acceleration, instantaneous speed, instantaneous velocity, instantaneous acceleration, reading graphs of acceleration, speed, velocity and following questions of Chapter 3 Motion in a Straight Line Class 11 Physics IIT Jee Mains/ Neet:

Example 3.2 The position of an object moving along x-axis is given by x = a + bt2 where a = 8.5 m, b = 2.5 ms–2 and t is measured in seconds. What is its velocity at t = 0 s and t = 2.0 s. What is the average velocity between t = 2.0 s and t = 4.0 s ?

Example 3.3 Obtain equations of motion for constant acceleration using method of calculus.

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