That's pretty much dependent on your strength and your pedalling skills. You are the motor, your ability is what decides how fast the bike is.
If the rider is immensely strong, the fastest gear is when you have the chain on a big chainwheel in front, and on a small sprocket at the rear.
But for someone of normal strength, the fastest gear is one where you're strong enough to keep turning the cranks at about 100 turns/minute.
The best gears to use for mountain bikes are typically a wide range of gears to handle varying terrains, including steep climbs and fast descents. Look for a bike with multiple chainrings in the front and a wide-range cassette in the back for optimal performance on different types of trails.
Depends on how fast you pedal. As it is a single gear bike. BMX bikes are made that way because if crashed, the bike would be 10 times harder to fix.
it can probably go about 100 miles per hour and it depends about the gears how much gears it has
it depends on how on how fast you petal and how fit you are
Not particularly, 10 mph is below average sprinting speed. The record speed on a mountain bike is above 100mph.
my mongoose goes to 900-1000 mph
If you pedal very fast then you may lose control
As fast as you can pedal.
A mountain bike can typically reach speeds of 25-30 miles per hour on flat terrain, but can go faster downhill or with a strong rider.
A mountain bike typically goes around 10-20 miles per hour when ridden on rough terrain.
A mongoose's top speed is approximately 36 mph.
A mountain bike can reach speeds of up to 40-50 miles per hour when ridden downhill on a steep slope.