It keeps the roller down and creates friction to allow the roller to move.
Of course they move! And no, the track won't actually move and the roller coaster stays still. It is all powered by electricity, you see!
It would not move
a cuckoo
There are many parts to a mouse including the roller. The roller functions to move the arrow on the screen.
By ship, and on land by roller logs.
Gravity.
1. My friends think i am cuckoo. 2. My friend has a cuckoo clock and a bird pops out and says cuckoo, cuckoo.
A colonial cuckoo is a colonial style cuckoo clock.
Yes,because it is moving
because magnets and computers
No. A cuckoo is a bird.