40% decrease
If one's speed changes from 10 km/h to 6 km/h, one has decelerated.
distance (km) / speed (kph) = time (Hrs) if you go 1 km at 10 kph then: 1 / 10 = 0.1 but 0.1 hours isn't very helpful so: 0.1 X 60 = 6 it takes 6 minuets to go 1 kilometre at 10 kilometres per hour!
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It is 3 x 10^6 km or 3 x 106 km
6 km in 45 minutes = 6/45 = 0.133 km per minute.
If one's speed changes from 10 km/h to 6 km/h, one has decelerated.
average speed = total_distance/total_time = (80 km + 100 km)/(10 min + 20 min) = 180 km/30 min = 6 km/min 1 hr = 60 min → 6 km/min = 6 × 60 km/h = 360 km/h
6 km/h
An airplane travels 80 km in 10 minutes and then flies 100km in 20 minutes the average speed of the plane is? 80 km in 10 minutes = 8 km/min 100km in 20 minutes = 5 km/min Average speed = total distance traveled ÷ total time Average speed = 180 km ÷ 30 min = 6 km/minute Notice the average speed is closer to 5 km/min, because the plane spends twice as much time traveling at the slower speed.
You cover 100 km in one hour. 10 km is 1/10 of 100 km, so you need 1/10 of an hour = 6 minutes.
distance (km) / speed (kph) = time (Hrs) if you go 1 km at 10 kph then: 1 / 10 = 0.1 but 0.1 hours isn't very helpful so: 0.1 X 60 = 6 it takes 6 minuets to go 1 kilometre at 10 kilometres per hour!
Sir, your question is not complete. Please complete the format and I might answer it
Moving 12 km in 40 minutesMoving 6 km in 15 minutesMoving 10 km in 20 minutesMoving 18 km in 30 minutesThat’s the answer!
It is 3 x 10^6 km or 3 x 106 km
We first set a proportion:60/10 = 25/xSolving yields:6 = 25/x6x = 25x = 25/6x = 4 1/6 km
The answer is 2.4 km/h. Distance = Speed * Time. For the initial journey: d=4*6 =24 km He took the same path back thus the distance is the same. 24=10*speed Speed = 2.4 km/h
speed = wavelength x frequency, so it can't be done unless you know the speed. However if it's an electromagnetic wave the speed is about 3 x 108 km/s so the wavelength is 3 x 108/6 x 1018 km = 5 x 10-11 km