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a figure skater is spinning slowly with arms outstretched. she brings her arms in close to her body and her moment of inertia decreases by 1/2. by what factor does her rotational kinetic energy change?

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The moment of inertia is in half as she draws her arms closer to her torso. A double increase in angular velocity.

What is the straightforward meaning of velocity?

The shift that an object / particle experiences with regards to time is expressed vectorially as velocity. The meter / second (m/s) is the accepted unit of flow speed (also known as speed).

How do you calculate velocity?

The vector quantity velocity (v), denoted by equation v = s/t, quantifies displacement (not change in position, s), over change in time (t). Velocity (or rate, ) is a scalar number, denoted by the formula r = d/t, that quantifies the average distance (d) so over change in time (t).

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