MCQ
A car is travelling with linear velocity $v$ on a circular road of radius $r$. If it is increasing its speed at the rate of $'a'$ $meter/{\sec ^2}$, then the resultant acceleration will be
- A$\sqrt {\left\{ {\frac{{{v^2}}}{{{r^2}}} - {a^2}} \right\}} $
- ✓$\sqrt {\left\{ {\frac{{{v^4}}}{{{r^2}}} + {a^2}} \right\}} $
- C$\sqrt {\left\{ {\frac{{{v^4}}}{{{r^2}}} - {a^2}} \right\}} $
- D$\sqrt {\left\{ {\frac{{{v^2}}}{{{r^2}}} + {a^2}} \right\}} $
