A ramp is a simple machine called the
a. wedge
b. pulley
c. inclined plane
d. lever

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

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