# A cyclist starts from the centre𝑂 of a circular park of radius 1 km, reaches the edge 𝑃 of the park, then cycles along the circumference and returns to the point 𝑂 as shown in figure. If the round trip takes 10 min, the net displacement and average speed of the cyclist (in meter and kilometer per hour) are

Question : A cyclist starts from the centre𝑂 of a circular park of radius 1 km, reaches the edge 𝑃 of the park, then cycles along the circumference and returns to the point 𝑂 as shown in figure. If the round trip takes 10 min, the net displacement and average speed of the cyclist (in meter and kilometer per hour) are

(A) 0, 1

(B) 214,$\dfrac{\pi +4}{2}$

(C) $\dfrac{\pi +4}{2}$ ,0

(D) 0, 21.4

Solution :

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