What choice best describes the strong force None of the aboce It explains radioactive decay It holds the nucleus of an atom together It describes the interaction of charged particles

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

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.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity