Question

a cyclist starts from the centre o of circular path of radius 10m cover the radius of circular path and reaches at point x on circumference ,then cycle along the semicircular path and reaches the point y if he takes 10 min to go from o to y then average speed of the cylist

Answer 1

10 m , (1+pi )/60 m/s

Answer 2

"Given:

Radius: 10m

Time: 10 minutes: 600 seconds

Average speed: ?

Solution:

The distance of the circular path can be found out by addition of radius and circumference of cirular path.

Distance = Radius + Circumference

              = 10m + $(2 \pi \times 10)$

Time = 600 seconds

And the average speed is given by the following relation:

       Average speed $= \frac{ Distance}{time}  =  \frac{10 (1 + 2\pi)}{600}$                      

                               $= \frac{(1 + 2\pi)} {60}  m/sec$"