Question

if a sprinter runs a distance of 100meters in 9.83seconds calculate his average speed in km/h​

Answer 1

Answer:

Explanation:distance travelled by sprinter = 100 m

Time taken = 9.83 sec

∵speed = distance/time taken

= 100/9.83

= 10.17 m/s

Now we know, 1 km/h = 1000/3600 m/s

so, 1 m/s = 3600/1000 km/h = 18/5 km/h

∴ 10.17 m/s = 10.17 × 18/5 = 10.17 × 18/5 = 36.612 km/h

Hence, average speed = 36.612 km/h

Answer 2

Explanation:

distance = 100 m

=0.1 km

time = 9.83 sec

= 9.83/3600 hrs

avg speed = total distance / total time

=0.1 × 3600/9.83

=36.62 km/hr