A particle is given an initial velocity of 20m/s. acceleration of the particle changes with time and its variation is shown in the following figure.

A particle is given an initial velocity of 20m/s. acceleration of the

1.	A particle is given an initial velocity of 20m/s. acceleration of the particle changes with time and its variation is shown in the following figure.
Answer» <html><body><p><br/></p>Solution :Area under <a href="https://interviewquestions.tuteehub.com/tag/theacceleration-706313" style="font-weight:bold;" target="_blank" title="Click to know more about THEACCELERATION">THEACCELERATION</a> - time graph representsthe change in <a href="https://interviewquestions.tuteehub.com/tag/velocity-1444512" style="font-weight:bold;" target="_blank" title="Click to know more about VELOCITY">VELOCITY</a>. Area above the time axis is takenas positive andbelow the timeaxis , it is taken as negative . To acquireinitial velocityagain ,changein velocitymust be zero . Ifwe canextend the graph for 6s then we can see that <a href="https://interviewquestions.tuteehub.com/tag/totalarea-3225740" style="font-weight:bold;" target="_blank" title="Click to know more about TOTALAREA">TOTALAREA</a> becoms zero <a href="https://interviewquestions.tuteehub.com/tag/dueto-960654" style="font-weight:bold;" target="_blank" title="Click to know more about DUETO">DUETO</a> equal amounts of positive and negative areas. Henceparticle acquires <a href="https://interviewquestions.tuteehub.com/tag/back-389278" style="font-weight:bold;" target="_blank" title="Click to know more about BACK">BACK</a> its initialvelocity att = 6s. <br/> Answer is 6 .</body></html>