Two persons are moving with velocity 10 meter per second in opposite direction their relative velocity is
20 meters per second.
The relative velocity of two objects moving in opposite directions can be found by taking the sum of their individual velocities. In this case, the velocity of the first person is 10 meters per second and the velocity of the second person is also 10 meters per second.
When moving in opposite directions, the relative velocity can be calculated as follows:
Relative velocity = velocity of the first person + velocity of the second person
Relative velocity = 10 m/s + (-10 m/s) [Negative sign indicates opposite direction]
Relative velocity = 0 m/s
Therefore, the relative velocity of the two persons moving in opposite directions is 0 meters per second.