Question

Ali goes around a circular track that has a diameter of 20m. If he runs around the entire track for a distance of 160m, what is his angular displacement? A. 16 rad B. 10 rad C. 5 rad D. 8 rad​

Answer 1

Answer:

D. 8 rad

Explanation:

angular displacement=length of arc/radius

angular displacement=160m/20m

angular displacement=8 rad

Answer 2

Answer:

A. 16 rad

Explanation:

angular displacement = arc length/radius

= 160/10 = 16 rad