Question

A car travels 100 meters in 5 seconds. What is the speed of the car?

speed = distance over time; 1 mile = 1609 meters

8.9 miles per hour

16 miles per hour

20 miles per hour

44.7 miles per hour

Answer 1

1 mile = 1609 meters
Speed = distance /time
speed = 100 /5
= 20 m/s
now 44.7 miles per hour
44.7 miles multiply with 1609 =71922 meters
1 hour = 3600 secs

71922/3600=19.98
=20 m/s
D option is correct