Question

A body starting from rest accelerates uniformly at 3m/s for first 4 seconds, then moves at constant velocity for 3 seconds and then decelerates at -4m/s till its velocity is zero.

Draw the acceleration-time graph for the motion of the body. And also draw the displacement-time graph till the velocity becomes zero.

Answer 1

acceleration graph for first 4 second inc.upward then for next 3 second becomes straight and then for next 4 second becomes downward......
 similarly displacement graph inc for 1st 7 second then slow down for next 4 sec.