60sec in a min/20=3*400m = 1200m/min*60(min per hr)= 72000m/h= 72km/h
Cycler's speed = 400/20 = 20 meters per second. Skier's speed = 1500/60 = 25 meters per second. The skier's average speed during his minute is 25% faster than the cyclist's average speed during his 20 seconds.
You divide 400m by 20s to get: 400 m / 20 s = 20 m/s (which is a moderate speed for a vehicle)
100m in 20s = 300m in 60s = 1 minute so 300m x 60min = 18000m in 1hour Answer: 18 kilometres per hour
ydefk
Speed is calculated by dividing distance by time, so: 100m / 20s = 5 m/s The object is travelling at 5 metres per second. Or, it is travelling at 7200 kilometers per second.
20s 30s
Average temperature here in Western Michigan are in the high 20s/low 30s in the day time, into the high teens and low 20s at night.
about 3456
velocity is distance divided by time. (miles per hour, feet per sec, etc.) so the average speed of the ball is 10m/20s or .5 m/s
they wer from 10mph to 30mph
probably mid to late 20s
20s through late 30s