Find the unit rate in feet per second 171 miles3 hours and 3

Find the unit rate in feet per second. 171 miles/3 hours and 300 yards/1 minute

Solution

(a) 171 miles/3 hours

1 mile = 5280 ft
171 miles = 171 *5280 = 902880 ft

1 hour = 60 * 60 sec = 3600 sec
3 hours = 3*3600 = 10800 sec

171miles/ 3hours = 902880 ft / 10800 sec = 83.6 ft/sec

(b) 300 yards/1 minute

1 yard = 3 ft
300 yards = 300 * 3= 900 ft

1 minute = 60 sec

So, 300 yards/1 minute = 900ft/60 sec = 15 ft/sec