Usain Bolt won the mens 100m race in a time of 963 seconds a

Usain Bolt won the men\'s 100m race in a time of 9.63 seconds. a. How fast is he going in meters per second? Round your final answer to 2 decimal places. b. How fast was he going in miles per hour? (1 mile = 1609.34 meters) Round your final answer to 3 decimal places.

Solution

a)solution-:   Distance = 100m

time = 9.63 seconds

speed = distance / time

=100/9.63 m/s

=10.38 m/s

b)    10.38 m/s =10.38m/s * 1 mile/1609.34 m * 3600 sec/ 1hour

=10.38*3600/1609.34 mile/hour

=37368/1609.34

=23.219 miles   per hour.   answers