Question

Two particles A and B start moving with velocities
20 m/s and 30root2 m/s along x-axis and at an angle
45° with X-axis respectively in xy-plane from origin.
The relative velocity of Bw.rt. A
(1) (10i +30j) m/s
(2) (30î +10j) m/s
(3) (30i – 20root2j)m/s
(4) (30root2i +10root2j) m/s​

Answer 1

Explanation:

relative velocity of B w.r.t. A

= velocity of B - velocity of A

= (30√2- 20) m/s