Are cheetahs the fastest land animal?

No, they are the fastest running animals reaching speeds of upto 64 mph, but that speed is completely eclipsed in comparison to the speed of a striking Eastern Diamondback Rattlesnake (strikes have been documented at speeds of 175 mph).
Cheetahs are the fastest land animal, the fastest animal is the peregrine falcon.

Yes!
no the fastest animal in the world is the pedigree falcon peregrine falcon not pedigree
Yes, they can run at up to 64 mph.