Question

To boats ,A and B start off simultaneously from one bank of a river normal to it . Boat A moves with a uniform velocity of 5m/s relative to water and boat B moves with an acceleration of 2m/s^2 . If the speed of water current be 2 m/s , the relative separation between the two boats at t=2sec is?

Answer 1

Boat b is accelerated with 2m/s it means it speed will increase with 2m every second so the speed of boat b is 2×2=4
the relative separation between the two boats is 5-4=1