The motor driving a grinding wheel with a rotational inertia of 0.36 kg m2 is switched o? when the wheel has a rotational speed of 25 rad/s. after 6.6 s, the wheel has slowed down to 20 rad/s. what is the absolute value of the constant torque exerted by friction to slow the wheel down? answer in units of nm.

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.