Question

in race a girl runs 200 meter in 40 second her average speed is . a. 5 m/s b. 10 m/s. c . 15m /s d. 20 m /s.​

Answer 1

Solution:-

Girl run 200 meters in 40 sec.

Total Distance = 200 m

Total time taken = 40 sec

$\bf \: average \: speed = \frac{total \: distance}{total \: time \: taken}$

By applying the formula we get

$\bf \: average \: speed \: = \frac{200m}{40s}$

$\bf \: average \: speed \: = \: 5m {s}^{ - 1}$

Answer = 5m/s , option a is correct

Answer 2

Answer:

Average speed = Total Distance / Total Time

Given that,

Total distance = 200 m

Total time = 40 s

Substituting thes values in we get,

Average speed = 200 / 40

Average speed = 20/4

Average speed = 5 m/s