Problema Solution
Johns go-cart went 10 laps around a 1320-foot track in 12 minutes. How fast was he traveling in kilometers per hour?
Answer provided by our tutors
we need a conversion factor to go from ft/min to km/hr:
60 min = 1 hour
1000 meter = 1 km
1 foot = 12 in
1 in = 2.54 cm
1 meter = 100 cm
(ft/min) * (12 in/1 ft) * (2.54 cm/1 in) * (1m/100 cm) * (1km/1000 m) * (60 min/1 hr)
(12*2.54*60)/(100*1000) = 0.018288
(10*1320 / 12) * 0.018288 = 20.11679
John's go cart travelled at approximately 20 mph