No, speed can vary and one can still calculate the average speed of an entire trip. Average speed is equal to the change in distance divided by the change in time.
It is called a definition.
It is called speed Speed = Distance/Time
speed = distance / time. In travelling over a distance, the speed may vary. The average speed is the constant speed that covers the given distance in the given time. First convert the time to hours and fractions of hours: 45min = 45/60 hrs = 0.75hrs 3hr 45min = 3.75hrs Now divide: average speed = 180 / 3.75 = 48 mph.
The average speed is (60 km) / (2 hr) = 30 km/hr. The speed along the way would most likely vary above and below that number.
Average speed is called average speed because it represents an average speed of something over a distance. Avarage could be thought of as a way to "even out" speed over a distance to see how fast an object was moving across that distance if it moved at a constant speed.An average speed takes into account stops and restarts as well as changes in speed of an object over the distance under consideration. The moving object might be moving faster at some points and slower at others. The object might stop and then resume traveling. All these things are "evened out" by average speed.A car taking a group to an eatery across town will start and stop as well as change speed across the distance. By dividing the distance by the travel time, we get the average speed that a car moving at a constant velocity would travel at to make the trip.
It is called a definition.
Yes. Wind can vary in both speed and direction at different elevations. This variation is called wind shear.
The average speed of a sailboat depends on the wind to a large extent, also ho it is rigged. So the average can vary a great deal, depending on the circumstances
It is called speed Speed = Distance/Time
speed, or average speed.
The speed of an aeroplane can vary, depending on what sort of plane or jet it is, between roughly 500km/h to 2000m/s
The speed of light. (It doesn't vary depending on altitude, or any other factor.)
It is usually meters per second. But it can vary if that is not a suitable unit to use.
Acceleration equals velocity divided by time i.e a=v/t The S.I unit of Acceleration is m/s2
Its speed will vary greatly as its orbit is highly eccentric. It will be slower when further out from the sun on its 11,000 year orbit. Its average speed is around 1.04 km/s.
Temperature
Average bus speed will vary depending upon the country you live or on the roads. In towns it can be 20 -30mph and on the Highways 60 - 70 mph