Question : A stone is thrown with a velocity π£ making an angle ΞΈ with the horizontal. At some instant, its velocity π is perpendicular to the initial velocity π£. Then π is
(A) π£ sin ΞΈ
(B) π£ cos ΞΈ
(C) π£ tan ΞΈ
(D) π£ cot ΞΈ
Answer : option (D)
Solution :
