Question

A dog runs 120m away from his master in a straight line in 9.0 s, and then runs halfway back in one third time. calculate (a) it's average speed and (b) it's average velocity​

Answer 1

Answer:

Average speed is 20 m/s

Average velocity is 0 m/s

Explanation:

Avg speed = Total distance / Time taken

= 2 × 120 / 9 + 3

= 20 m/s

Avg velocity = Total displacement / Time taken

= 0 / 12

= 0 m/s