No.
Yes. For example, if you drive exactly 65 MPH consisently for an hour, your average speed will also be 65 MPH.
Exactly 15 km per hour.
Yes. "Miles per hour" is exactly that: distance divided by time unit.
80 km per hour
The average speed of a camel is 30 miles per hour.
The average speed of the Caltrain is fifty-five miles per hour, but it has a top speed of seventy-nine miles per hour.
The average speed is 110 km per hour.
The average speed of a sneeze is about 100 miles per hour.
Average speed = (distance covered)/(time to cover the distance) = exactly 7.5 km per 1.5 hours.That can also be expressed as ' 5 km per hour '.
The average speed of an Aeroplane is about 700km per hour. While landing and take off its speed can be around 350km per hour.
Running a mile in exactly 4 minutes equates to a speed of 15 MPH.
If I walk 4 kilometers in an hour, my average speed during that hour was 4 km/hour. My instantaneous speed may well have been faster at times, and slower at other times, 4 km/hour is only the average.