Question

please Answer for the Question​

Answer 1

Answer:

Average speed = 0.8m/s

Average speed = 0m/s

Explanation:

As we know,

Average speed = total distance travelled/total time taken

=20+20/25+25

The values are taken twice because the boy is travelling twice.

=40/50

= 0.8m/s

So, his average speed is 0.8m/s.

Now,

Average velocity = displacement/time

(as the boy goes to the classroom again, the displacement will be 0)

= 0/25+25

= 0/50

= 0

So, his average velocity is 0m/s.