Question

A boy is running on a straight road. He runs 500 m towards north in 2 minutes 10 seconds and

then turns back and runs 200 m in 1 minute. Calculate

(i) His average speed and magnitude of average velocity during first 2 minutes and 10

seconds, and

(ii) His average speed and magnitude of average velocity during the whole journey.​

Answer 1

Answer:

In the first 2min 10s the boy is travelling along a straight path. This means that distance will be equal to distance and thus average speed = average velocity.

so,

average speed = distance travelled / time taken

= 500m / 130s

thus,

average speed = average velocity = 3.85 m/s