Question

A person swims 100 m in45 second at the start then he covers 80 m in the next 45 second and in the last 10 second covers 25 m calculate average speed

Answer 1

the average sppeed is =total distance upon total time
100+80+25/45+45+10sec
205/100sec
2.5m/sec

Answer 2

Here's the answer

Given =>

Total distance = 100 m + 80 m + 25 m = 205 m

Total time taken = 45 s + 45 s + 10 s = 100 sec

To find =>
Average speed = ?

Solution =>

$\sf{Avg \: speed = \frac{total \: distance \: covered}{total \: time \: taken}}$

$\sf{ \sf{= \frac{205}{100}}}$

$\sf{ = 2.05 \: m/s {}^{2}}$

Thus,

Average speed is 2.05 m/s2

Thanks!!