if there are hole you will fall and lost your speed
but on the straight surface you will get more speed
the height does effect how fast you run. people with shorter legs run faster than people with longer legs
Cheetahs effect people to run really fast so that they can catch them.
The size of a ball does affect how fast it rolls. Surface also play a major role in how fast a ball will move.
Temperature and surface area
running on grass affects a mans movement compared to running on a smooth surface because when he is running on grass, the grass and soil underneath the grass is soft and causes him to not run as fast as he could while on a flat, hard surface.
its not how fast the rottweiler can run its how fast you can run !
as fast as you want them to run
How fast can a woodchuck run
as fast as that child can run! ;]
water helps you to run fast
they run really fast. In fact they run 50 MPH!
They can run very fast and kill antelopes.