Question:
A cyclist moves from A to C on a circular path ABCD of radius 10 meter in 10 sec, then calculate its average speed and velocity.
Answer:
Path length = Half the perimeter of the circle = ½ * 2∏ r = ∏ r = 10∏ m
Displacement = Shortest distance between the two points = Diameter of the circle = 20m
Average speed = Total path length / Total time = 10 ∏ / 10 = 3.14 m/s
Average velocity = Total displacement / Total time = 20 / 10 = 2 m/s
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