three
A horses jog, or trot, is a 2 beat gait.
A gallop has four beats
its depend on the stamina of the horse but horse can run a lot.
Millions. Tell the teacher you are a scientist.
On average, a horse's heart beats about 40 times a minute.
Depends on the type of horse and many more factors.
Many times a horse will run because it is scared.
Normal (approximately average) heart rate for an adult horse is 35bpm. In 24 hours that's 50,400 beats.
If the horse is a Quarter Horse, it can run at over 50 mph. If it's anything else, it probably will run at about 40 mph. With barrels, however, the horse probably won't be able to reach full speed.
54
You have to run beside it
The primary gaits are walk, trot, canter, gallop and run. Some people use the term gallop and run interchangably. Traditionally, canter is a slower 3 beat gait and gallop or (hand gallop) is the faster version of a canter and still 3 beats. In racing the fastest gait is 4 beats and the horse is said to be running.