why does a parachute slow a person down?

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.

The two required components for a generator

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.