toni has a mass of 45.0 kg and is moving with a speed of 10.0m/s when she is forced to slow to 5.00 m/s. Find her initial kinetic energy, her final kinetic energy and the work she does to slow down.​

Why there is no inductive reactance in dc circuits

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.