11 minutes and 15 seconds
4 sec/1 min = 4 sec/60 sec = 1/15
25 hr 12min 41sec- 8hr 35min 15 sec
15
15
11 minutes and 15 seconds
4 sec/1 min = 4 sec/60 sec = 1/15
60 sec = 1 min 900 sec = 15 min 60/1 * 900/15
25 hr 12min 41sec- 8hr 35min 15 sec
normal value : 10-15 sec.
There are 60 seconds in a minuteso (3 minutes = 180 seconds) + 15 seconds= 195 seconds
15
15/60=1/4=0.25 minutes
Acceleration is speed with a time, ex. 15 mph/hour, 150 km/sec/sec.
15
The speed of the ball is ( \frac{120 \text{ cm}}{15 \text{ sec}} = 8 \text{ cm/sec} )
1 mile = 5280 feet 1 hour = 60 minutes = 3600 seconds 1mph = 1 mile / 1hr = 5280 ft / 3600 sec = 22/15 ft per sec ~= 1.467 ft per sec Therefore to convert mph to ft per sec, multiply by 22/15 (or approx. 1.467).