Question

Two persons A and B are walking with speed 5 km/h and 7 km/h respectively in the same direction. Find th
relative distance of Bw.rt. A after 2 hours.​

Answer 1

For relative displacement we may calculate the relative velocity first for A with respect to B as $\large V_{BA} = V_{B} – V_{A} = 7 – 5 = 2 km/h$

So the relative displacement of B wrt A is $\large V_{BA} × t = 2×2 = 4$ Kilometres

Answer 2

Answer is 4km of the question