What are two landforms made from plate movement

What is work? how much work is done to move an object 0 meters?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?