Rotational kinetic energy is associated with angular momentum? Does that mean that rotational kinetic energy is a vector?

Computation. A concept car includes a solid disk-shaped flywheel which can be spun up to store rotational kinetic energy. On demand, that stored energy can be converted into the car's translational kinetic energy. Suppose the flywheel has a mass of 380 kg, a radius of 0.4 m, and maximum rotational speed of 70 rev/s. Calculate the 1,593-kg car's maximum speed (starting from) rest if all of its kinetic energy comes from the flywheel. [Tip: Be careful with units.] Umax m/s Record your numerical answer below, assuming three significant figures. Remember to include a as necessary. O Search REY

An aluminum cylinder of radius 12m, length of 20m, and thickness of 0.02m is spinning in space at the rate of once every 137 seconds around the y-axis. What is it's angular momentum and rotational kinetic energy?

Calculate the  rotational inertia of a meter stick, with mass 0.56 kg about an axis perpendicular to the stick and located at the 20 cm mark.  Enter units as kgm^2.  Hint:  Calculate the rotational inertia around the center of mass treating it as a thin rod and use the parallel axis theorem.