Question

A cyclist starts from centre O of a circular park of radius 1 km, reaches the egde and the cycles along the circumference and returns to to the centre O along OQ. If the round trip takes 10 mins calculate the average speed.

Answer 1

Answer:

Since the initial position coincides with the final position. So, the net displacement of the cyclist = zero

Average speed of the cyclist =

Total time taken

Total distance travelled

=

10

OP+PQ+QO

km min

−1

=

20

π+4

×60kmh

−1

=21.4kmh

−1

Explanation:

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