The total kinetic energy of a baseball thrown with a spinning motion is a function of:
A)its linear speed but not rotational speed.
B)its rotational speed but not linear speed.
C)both linear and rotational speeds.
D)neither linear nor rotational speed.

Question

Quizplus · Accepted Answer

The total kinetic energy of a baseball thrown with a spinning motion is a combination of its linear kinetic energy (1/2mv^2) and its rotational kinetic energy (1/2Iw^2), where m is the mass of the baseball, v is its linear velocity, I is its moment of inertia, and w is its angular velocity. Therefore, the total kinetic energy of the baseball is a function of both its linear and rotational speeds (choices A and B are incorrect), and not neither linear nor rotational speed (choice D is incorrect).

The Total Kinetic Energy of a Baseball Thrown with a Spinning