Average Top Spin Ground stroke speed is 62 MPH on the pro tour, and average Slice speed is 46 MPH. some ground strokes have reached above 105 MPH, But on average rally speed is 62 MPH
Tennis Professional
J R A
After careful deliberation upon this topic, I have discovered that my results are unanamous. The average speed of a tennis balls machine ranks in at a whopping 80 miles per hour.
96 km/h 60 m/h
depends 2 stroke of 4 stroke and racing bike or a trail bike
About 30 mph.
It is hard to determine what the average speed of a tennis serve is from various players, but Sam Qurrey is among the fastest serves of all time. He has recorded a serve of 141 miles per hour at multiple events.
the top speed of a 150cc dirt bike can depend on a lot of things like if its a 2 stroke or a 4 stroke engine what kind of terrain your on and how much you way but the average is about 50-55mph
The average running speed for a snake is 12 1/2 miles per hour. Snakes have to travel against the ground which inhibits their speed.
close to 600 ground MPH
== water cooled 2 stroke about 25+ horsepower 6 speed 200 lbs these are all average through out the years average speed 65+== pretty dependable when properly maintained ==
The average speed of a hot air balloon depends a lot on the environment. The Pacific Flyer actually recorded the fastest ground speed for a manned balloon at 245 mph.
(1,832)/(average ground speed in knots) hours.
A woman throws a baseball from the front of an airplane to the back. From the perspective of the woman, the baseball travels at an average speed of 15 m/s. To an observer on the ground, the airplane is traveling at a constant speed of 820 km/h. What is the speed of the baseball from the perspective of the ground observer?