Round objects don't have to roll down hill, they can slide if they have a heavier side, but are more likely to roll due to gravity.
propensity
A downhill ski
Mass (gravity) & friction!
The force of gravity is the primary force causing an object to roll down an incline. As the object moves downhill, its potential energy is converted into kinetic energy, propelling it forward. Friction between the object and the incline also plays a role in controlling the speed of descent.
The character King K. Rool first appeared in 1994 in Donkey Kong Country.
[object Object]
No.
A cylinder is a long round object with flat circular ends.
An object or picture can be made round. It can be done in picture tools after selecting it.
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[object Object]
A round object with flat, circular ends is a cylinder. It is shaped like a can of vegetables.