Average speed is not measuring the distance traveled in total, as that is total distance. For example, if a car travels 30 miles in 1 hour and 90 miles in the next 2 hours, the average speed is not calculated as (30 + 90) / 3 hours.
Apart from the fact that they are average, nothing. For example, the average time I spend sleeping has nothing to do with any average speed.
No, it can't. Average VELOCITY can be zero, though.
This will happen any time the speed changes over time.
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Yes. For example, if you drive exactly 65 MPH consisently for an hour, your average speed will also be 65 MPH.
Yes, a body can have a nonzero average speed but zero average velocity if it moves around a closed path and returns to its starting point. For example, if a car travels around a circular track at a constant speed, its average speed will be nonzero (as distance is covered), but its average velocity over the entire trip will be zero as the displacement is zero.
When an object is moving along a straight line at a variable speed, we can express the magnitude of the rate of motion in terms of average velocity.It is the same way as we calculate average speed.
Since speed is a scalar quantity, the only way the average speed can be zero is if the instantaneous speed is at all times zero, making it not a moving body, so no on the average speed. The average velocity, on the other hand, can easily be zero. The simplest example is you running in a circle.
No. If you divide a distance by a speed, you get a time, not a speed. For example, (meters) / (meters/second) = (seconds).
Velocity (or speed) = Distance ÷ Time In this example, speed = 300/6 = 50 kph
Velocity (or speed) = Distance ÷ Time In this example, speed = 120/2 = 60 kph