The Harrier jet does this
anywhere from 100-4000 mph
Yes, most factories are engineered so that conveyors move materials up and down inclined planes at certain locations.
The sky does not move and you must be complete looney.
Inclined planes don't move. Things that go down it do.
2 hours
Tigers are capable of being almost motionless when tracking prey,and incredibly fast when atttacking.
Theoretically, yes. The force in which balances gravity and keeps the plane in air is produced by the relative speed between the air and the plane's wings. When the air is still, the plane has to move (fast!), relative to the air. If the planes is to be static, then the air has to move: really fast. However, winds of such strengths are rather unlikely concerning passanger jets and large planes. For small (model planes, etc), it is hightly possible.
Inclined planes have gravity to help them if the object is to be moved down the plane. If they are flat planks on inclined planes, they could be used with fulcrums to move them (like a "teeter totter") That's how they built the pyramids. Billy-carts roll down an incline plane
to go and to move fast if you are going up or down
12cm slow
They move their tails up and down so fast that it makes swim fast.
no you