Rotational kinetic energy:

$\overline{){\mathbf{K}}{\mathbf{.}}{\mathbf{E}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{2}}{\mathbf{I}}{{\mathbf{\omega}}}^{{\mathbf{2}}}}$

$\overline{){\mathbf{\omega}}{\mathbf{=}}\frac{\mathbf{2}\mathbf{\pi}\mathbf{N}}{\mathbf{t}}}$

A typical ten-pound car wheel has a moment of inertia of about 0.35kg *m^{2}. The wheel rotates about the axle at a constant angular speed making 70.0 full revolutions in a time interval of 5.00 seconds. What is the rotational kinetic energy K of the rotating wheel? Express answer in Joules.

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