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A car A trave...

Question

A car A travelling with a speed of 60 km/hr on a straight road is ahead of another car B travelling with a speed of 40 km/hr. What would be relative velocity of A with respect to B? Would it be changed if B is ahead of A?

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Solution

Given : $V_{A} = 60$ km/hr $V_{B} = 40$ km/hr
Relative velocity of A w.r.t B $V_{A B} = V_{A} - V_{B} = 60 - 40 = 20$ km/hr
No, it would not change if B is ahead of A.

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