Question : A car is circulating on the path of radius 𝑟 and at any time its velocity is 𝑣 and rate of increases of velocity is 𝑎. The resultant acceleration of the car will be
(A) \sqrt{\dfrac{v^{2}}{a^{2}}+r^{2}}
(B) \sqrt{\dfrac{v^{2}}{r}+a}
(C) \sqrt{\dfrac{v^{4}}{r^{2}}+a^{2}}
(D) \left( \dfrac{v^{2}}{r}+a\right)
Answer : option (C)
Solution :
