Question

Two cars A and B are moving along a straight road with a velocity of 30 km/h each in the same direction with A ahead of B. Then velocity of B relative to A is

Answer 1

Given that,

Velocity of car A = 30 km/h

Velocity of car B = 30 km/h

We need to calculate the velocity of B relative to A

Using formula of relative velocity

$v_{BA}=v_{B}-v_{A}$

Where, $v_{A}$ = velocity of car A

$v_{B}$ = velocity of car B

Put the value into the formula

$v_{BA}=30-30$

$v_{BA}=0$

Hence, The velocity of B relative to A is zero.