330 kilometers / 4.25 hours = 77.65 kilometers per hour
To get the average speed, divide distance by time.
sound waves bounce off of walls. they need air to travel.
medium
Sound waves need a medium in order to propogate. Light waves can travel without a medium. The speed of light is 3*108m/s.
transparent
To get the average speed, divide distance by time.
19.3548 mph
Your average speed must be exactly 235 km per 3.25 hours.In more familiar units:235/3.25 = 72.3077 km per hour (rounded)
At 80 km/hr - which I am assuming is what you meant by 80 km, a car will travel 120 km. To make that journey in 2 hours, it must travel at 120 km/2 hr or 60 km/hr.
Millimeter centimeter meter kilometer is the right order
10km/h
They have to check up that the instruments are all in working order.
kilometer. This is the order. kilo>deca>centi>milli
Millimeter, centimeter, meter, kilometer.
77.64 Km/h
centimeter, inch, yard, kilometer, mile.
-- In order to convert 1 millimeter to 1 kilometer, you have to get 999,999 more of them. -- 1 millimeter can't be converted to 1 kilometer. It's only 0.000001 (one millionth) of a kilometer.