friction
Several reasons. The main reason being the friction created by the gravitation force acting on the board and pushing the wheels to the ground. Also the air resistance as the board is moving forward. Thirdly, the surface in which the skateboard is riding on would need to be perfectly smooth, theoretically on air, to create no resistance. And finally the rotation of the wheels against the bearings creates friction which even though they are greased to reduce the friction can not completely eliminate this factor.
Forward allows you to forward the message to someone else. However, be careful-- email should be private unless you have good reason to forward.
wrong 4 equals a good time
It is user abend.
It gives us something to look forward to!!
When you stand still . . . The sole of your shoe exerts a downward force equal to your weight against the ground. The ground exerts an upward force equal to your weight against the sole of your shoe. The net force where the sole of your shoe meets the ground is zero, which is the reason that your shoe doesn't accelerate vertically.
Actually, aircraft could fall on the ground if it's stalling (losing speed). The reason why their aren't any airplanes fall on the ground now is because most of the airplanes could warn the pilots if the aircraft is stalling and so the pilots will know they have to increase the speed.
Boredom
For some strange reason, 2320 hours equals exactly 2320 hours!
There is no reason why women should not be treated as equals to men. And, there is no reason to argue otherwise.
I know a PBX system that does this.
one reason for yourself to ride forward like a movemonet