motor cross is faster
There is not a single dirt bike sportsman who is credited for inventing dirt bike tricks. A lot of dirt bike riding is freestyle.
freestyle, dirt, street
Mountain bike helmets are better than dirt bike helmets
To do dirt biking freestyle is "faire du VTT freestyle" in French. VTT stands for VÃ©lo Tout Terrain (dirt bike).
ones got a motor the other is manual
That depends on what you are using it for. Obviously, if you are dirt biking, you should use a dirt bike, and otherwise use a street bike. Start out with what you are going to use the most - dirt (freestyle) or street racing.
Bicycles are powered by legs, however dirt bikes have gasoline powered motor!
it will cost about 5,000 to 10,000 to build a successful dirt bike if you want to go pro
A rocket is cooler:)
The difference is that the mountain bike tube is much burlier and wider than the dirt jump tube but may not be as strong in terms of hard hitting strength.
A pit bike is a very small bike that is more to like mess around with in the pits hint hint and a regular dirt bike is alot larger more for trial riding or racing.