Question

PHYSICS Class 9 Motion​

Answer 1

Answer:

hope it is understandable

Answer 2

Answer:

10√2

Explanation:

He takes 40 s for 1 complete round along square ground

total time elapsed = 2min 20 sec

=2×60 + 20 sec

=140 sec

140 can be written as 120 +20 sec

on 120 sec he will complete 3 rounds and will be back to his same position.

displacement =0

on remaining 20 sec he will cover half of the total distance 10 m to the right and 10 m up.

here shortest distance or displacement =√10^2 +10^2=10√2

and distance =20m