Question

a bus starts from rest and moves with acceleration of 1 metre per second square who is 48 metre behind the bus Run after it with a constant speed in 10metre per second the boy can catch the bus​

Answer 1

Distance travelled by bus = Distance travelled by man - 48

so 1/2 X 1 Xt2 = 10t - 48

t2 - 20t + 96 = 0

t = 8sec, 12 sec

earlier time is 8 seconds

hope it helps