Question

To a person going east in a car with a velocity of $25kmph$, a train appears to move towards north with a velocity of $25\sqrt{3}kmph$. The actual velocity

• A. $5kmph$
• B. $25kmph$
• C. $50kmph$
• D. $53kmph$

Answer 1

The correct option is C $50kmph$

The actual velocity is the vector sum of car velocity and train velocity. i.e,
$v=\sqrt{(25{)}^2+(25\sqrt{3}{)}^2}=\sqrt{2500}=50km/hr$