Question

When two bodies are moving in opposite directions along a straight path then the relative velocity of each body is greater than the absolute velocity of either body.
let the velocity of A and B moving in opposite directions be Va and Vb respectively.
Va=+V , Vb=-V
Velocity of B with respect to A
​​​​​​Vb - Va = -V-V= -2V which is not greater than the absolute velocity of B i.e, V
please explain this case.
​​​​​​
​​​​​​

Answer 1

Here negative sign indicates only the direction . Here velocity of A is choosen as +ve. That is the direction of object A is in positive X-axis direction( we can also choose direction of object B in positive X axis direction,then Vb will be positive) . The magnitude of velocity of B with respect to A is 2V which is greater than the absolute velocity of B i.e, V