First, convert your seconds and minutes to hours:
3 min = 180 sec + 26 sec = 206 sec
206/3600 hours = 103/1800 hours
Next, convert meters to miles:
1 meter = 0.000621371192 miles
1500 * 0.000621371192 ≈ 0.932 miles
0.932 converted to a fraction is 932/1000, which converts to 233/250
Lastly, to find the miles per hour, we divide the miles traveled by the hours:
233/250 ÷ 103/1800
When dividing by a fraction, simply multiply by the reciprocal:
233/250 ∙ 1800/103 = 419400/25750
419400/25750 = 16.29 mph (roughly)
12.41 mph
This would be an average speed of 8.1 miles per hour.
60 mi/hr * 1 hr/60 min * 1 min/60 sec * 5280 ft/mi = 88 ft/sec; so 60 MPH is 88 ft/sec. Multiply 88 ft/sec * 6 sec = 528 ft.
1 mi / 55 MPH = 0.018 hr * 60 min / 1 hr = 1.09 min * 60 sec / 1 min = 1 min 5.5 sec
1 min = 60 sec 30 min = 1800 sec
5.3465 mph, approx.
12.41 mph
This would be an average speed of 8.1 miles per hour.
60 mi/hr * 1 hr/60 min * 1 min/60 sec * 5280 ft/mi = 88 ft/sec; so 60 MPH is 88 ft/sec. Multiply 88 ft/sec * 6 sec = 528 ft.
time = distance / speed = 0.25 miles / 200 mph = 0.00125 hr 1 hr = 60 min → 0.00125 hr = 0.00125 × 60 min = 0.075 min 1 min = 60 sec → 0.075 min = 0.075 × 60 sec = 4.5 sec → it takes 4½ seconds to travel 0.25 miles at 200 mph.
0.1 mi / 70 MPH * 60 min/hr * 60 sec/min = 5.143 sec
60 mph(1 mile/60 sec)*(60 sec/1 min.)*(60 min/hr)
60 sec = 1 min 60 min = 1 hr 40 sec = 40/60 min = 2/3 min 2 min 40 sec = 22/3 min = 8/3 min → 2 min 40 sec = 8/3 ÷ 60 hr = 8/3 x 1/60 hr = 2/45 hr speed = distance ÷ time = 15/8 mi ÷ (2 min 40 sec) = 13/8 mi ÷ (2/45 hr) = 13/8 x 45/2 mi/h = 585/16 mph = 369/16 mph ≈ 36.5 mph
65 mi / 70 MPH * 60 min / 1 hr = 55.71 min = 55 min 43 sec.
0.1 mi / 50 MPH * 60 min/hr * 60 sec/min = 7.2 sec
1 mi / 55 MPH = 0.018 hr * 60 min / 1 hr = 1.09 min * 60 sec / 1 min = 1 min 5.5 sec
32 min 9 sec 40 min 10 sec adding gives... 71 min 19 sec 1 hr 11 min 19 sec. ■