Question : The coordinates of a moving particle at any time π‘ are given by π₯ = πΌπ‘3 and π¦ = Ξ²π‘ 3 . The speed of the particle at time π‘ is given by
(A) 3t\sqrt{a^{2}+\beta ^{2}}
(B) 3t^{2}\sqrt{a^{2}+\beta ^{2}}
(C) t^{2}\sqrt{a^{2}+\beta ^{2}}
(D) \sqrt{\alpha ^{2}+\beta ^{2}}
Answer : option (B)
Solution :
