A 1200N load is to be lifted with 200N effort using a first class lever. At what distance from the fulcrum must the effort be applied when the load is 15 cm away from the
fulcrum?
[Ans: 90 cm]

Aball is rolled uphill a distance of 5 m before it slows, stops, and begins to roll back. the ball rolls downhill 9 m before coming to rest against a tree. what is the magnitude of the balls displacement? a. 4 meters b. 9 meters c. 14 meters d. 45 meters