Question

Usha swims in a 90 m long pool. She covers 180 m in one minute by swimming from one end to the other and back along the same straight path. Find the average speed and average velocity of Usha​

Answer 1

Answer:

Speed = distance /time

Speed =180m/60sec

=3m/sec

Velocity =displacement/time

Velocity=0 (as displacement is 0)

Answer 2

Answer:

AVERAGE SPEED = 3m/ sec

AVERAGE VELOCITY = 0m/ sec

Explanation:

average speed =

distance covered/ total time taken

distance covered = 180 m

time taken = 1min \ 60 sec

average speed = 180/60 = 3m/sec

average velocity =

displacement/ total time taken

displacement = 0m

time taken = 60sec

average velocity = 0/ 60 = 0 m/ sec