Question

201. Two cars A and B start moving from the same point
with same speed v = 5 km/minute. Car A moves
towards North and car B is moving towards East. What
is the relative velocity of B with respect to A?
(1) 5√2 km/min towards South-East
(2) 5√2 km/min towards North-West
(3) 5√2 km/min towards South-West
(4) 5√2 km/min towards North-East​

Answer 1

Answer:

1

Explanation:

as car B is moving towards East and A towards North....car B will be in the south-east direction of car A

Answer 2

Answer:

(4) 5√2 km/min towards North-East​

Explanation:

As per the question,

We have been provided that,

Two cars A and B start moving from the same point

with same speed, that is magnitude of A and B are:

$V_{A} =V_{B} = 5\ \frac{km}{min}$

Therefore,

$Relative\ velocity = \sqrt{V_{A}^{2}+V_{B}^{2}}$

$=  \sqrt{(5)^{2}+(5)^{2}}$

$= \sqrt{125}$

$= 5\sqrt{2}\frac{km}{min}$

And the direction will be towards  North-East​

Hence, the relative velocity of B with respect to A $= 5\sqrt{2}\frac{km}{min}$

Therefore, the correct opttion is (4).