Question

the displacement time graph of 2 bodies a and b in 1 d motion in the same direction as shown.....

PLEASE SOLVE (NO SPAM ) ​

Answer 1

Answer = d

Explaination = Initially, speed of B is greater than that of A ( as we can tell by measuring initial slopes of both graphs ). But later on during motion, we can see that speed of B decreases. therefore there must have come a point where acceleration of B would have been equal to acceleration of A and in same direction. At that point, Aab = Aa-Ab = 0.