Light
gravity is the one to blame . gravity pulls down the biker closer to earth so it goes faster going down and slower going down
The shape of of the villi really matters. Because if its down then it goes faster if its like a hill it goes slow but then gets faster.
Ir probably goes down faster if its heavier. If the ball was as light as a balloon, would it go faster? OF course not. So, a heavy ball would go MUCH faster down a hill.
fire
Yes because it is just like a ball rolling down a hill; it obviously goes faster.
it affects it by if like say for instance it goes up a hill the speed would slow down or if u went down a hill then it would go faster.
push it down a hill
Gravity pulls it down and the weight of a car is less dense than a hill and therefore it goes down
Cycle down a hill.
drive down hill
go down hill
that depends. If you are Going down hill then in the air is faster.