question_answer

A car is moving along a straight road with a uniform acceleration. It passes through two points, P and Q, separated by a certain distance with velocity of 30 kmph and 40 kmph respectively. What is the velocity of the car exactly midway between P and Q?

Answer:

\[V=\sqrt{\frac{V_{1}^{2}+V_{2}^{2}}{2}}=\sqrt{\frac{{{30}^{2}}+{{40}^{2}}}{2}}=\sqrt{\frac{2500}{2}}\] \[=\frac{50}{\sqrt{2}}=35kmph\]