An elephant exerts a clockwise torque on a merry-go-round of 5.3 Nm while a rhino exerts a counterclockwise torque of 2.8 Nm on the same merry-go-round. What is the net torque on the merry-go-round

The energy released by a nuclear fusion reaction is produced when

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped

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.