Does a Spinning Bicycle Wheel Conserve Kinetic Energy and Momentum?

[eyehategod]

2 questions.
1.when you're spinning wheel by its shaft, does the wheel have any kinetic energy while it's spinning?is it conserved?explain why.

2.does the wheel have any net momentum while it's spinning? is it conserved?explain why

 

[Splinter-Cat]

1) yes, the wheel has kinetic energy

2) the entirety of the wheel has no net momentum. However, its parts all have angular momentum.