Question

OUK
Example 8.3 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.
Solution:​

Answer 1

Answer:

Total displacement =0

Time taken, t=1 min=60sec

Average speed = $\frac{total distance covered}{total time taken}$

= $\frac{180m}{60sec}$

= 3m/s

Average velocity ( $V_{av}$ ) = $\frac{Total Displacement}{total time taken}$

$V_{av}$ =  $\frac{0}{60}$

= 0 m/s