Question

In a recent Grand Prix, the winner completed the race with an average speed of 229.8km/h. What was his speed in miles per hour, meters per second, and feet per second?

229.8km/h:______mi/h
a)142.87mi/h
b)141.79mi/h
c)144.35mi/h
d)143.50mi/h

Answer 1

The winner's speed in miles per hour is 142.87 mi/h, in meters per second is 63.83 m/s, and in feet per second is 209.98 ft/s.

Step-by-step explanation:

To convert 229.8 km/h to miles per hour, we can use the conversion factor 1 mile = 1.609 km. So, the speed in miles per hour is 229.8 km/h × 1 mile/1.609 km = 142.87 mi/h.

To convert 229.8 km/h to meters per second, we can use the conversion factor 1 km = 1,000 m and 1 hour = 3,600 seconds. So, the speed in meters per second is 229.8 km/h × 1,000 m/1 km ÷ 3,600 s/1 hour = 63.83 m/s.

To convert 229.8 km/h to feet per second, we can use the conversion factor 1 km = 3,281 ft and 1 hour = 3,600 seconds. So, the speed in feet per second is 229.8 km/h × 3,281 ft/1 km ÷ 3,600 s/1 hour = 209.98 ft/s.