Choose the 4 statements that are true about simple machines.
A(They can change the direction of the force exerted.
B(They can change the force exerted on an object.
C(They increase the amount of work done on an object.
D(They can change the distance over which a force is exerted.
E(They can increase force and increase distance at the same time.
F(Due to friction, the work put into a machine is always greater than the work output of the machine.
G(They decrease the amount of work that a person needs to do to move an object.