Question

An aeroplane starting from a point travels towards north-east with a velocity of $400$ kmph. Another aeroplane starting from the same point travels towards north west with a velocity of $300$ kmph.The relative velocity of one aeroplane w.r.t. other is

• A. $350$ kmph
• B. $500$ kmph
• C. $100$ kmph
• D. $200$ kmph

Answer 1

Answer: (B)

$500$ kmph

relative velocity is = $\sqrt{160000+90000}=500$
The velocities will be $400$ and $300$ in perpendicular directions