Question

A particle is moving along a circular path of radius 7 m from the point A and returns back to the same point in 8 s. (i) What is its average speed and average velocity?

Answer 1

Answer:

(i) Average speed= 5.5m/s

(ii) Average velocity = 0m/s

Explanation:

Since the track is circular,

The distance travelled by the particle = Circumference of the circle

Distance = (2πr) m = 2 * (22/7) * 7 = 44m

Average Speed = (2πr)/t => 44/8 => 5.5m/s

Displacement = 0m (since it returns to the starting point)

Thus, Average velocity = 0/8 => 0m/s