Question

how to solve this ......answer is average speed =2m/s and average velocity =0

Answer 1

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Answer 2

FOR SPEED,

IN POOL THE VELOCITY OF WATER IS ZERO.

NOW,

$GIVEN \: \: DISTANCE = 180m$

$GIVEN \: \: TIME = 90s$

NOW,

$AVERAGE \: \: SPEED= \frac{DISTANCE TRAVELLED }{TIME TAKEN}$

$= \frac{180m } {90s}$

$= 2m /s$

AGAIN,

$AVERAGE \: \: VELOCITY = \frac{DISPLACEMENT }{TIME TAKEN }$

HERE DISPLACEMENT IS ZERO.

$.°.AVERAGE \: \: VELOCITY = 0m/s$

SO, AVERAGE VELOCITY IS 0m/s & AVERAGE SPEED IS 2m/s.