This would be sliding friction and it could happen when:
Of course! Friction applies in gymnastics in TONS of ways.
In many ways
Yes, in general friction can occur in a vacuum, but the only kind of friction that doesn't occur in a vacuum is, of course, air friction. There is no drag force on an object falling in a vacuum.
friction affects in any Circumtances
i dnt no
Friction!!
FRICTION!!!!!!!
Fluid Friction, & Rolling Friction.
Sliding Friction Occurs When And Object Is Being Slided On The Ground
Some friction will occur with seemingly smooth surfaces because at a molecular level, nothing is smooth.
The pistons, the cam(s), the lifters, every moving part will experience friction.
friction in gymnastics is hanging on bars. they rub chalk so there hands are rough and they get good grip.