In: Physics
1. a)A bowling ball of mass 5 kg rolls down a slick ramp 20 meters long at a 30 degree angle to the horizontal. What is the work done by gravity during the roll, in Joules?
b)A bowling ball of mass 5 kg rolls off the edge of a building 20 meters tall. What is the work done by gravity during the fall, in Joules?
c)A bowling ball of mass 5 kg rolls down a horizontal alley lane 20 meters long. What is the work done by gravity during the roll, in Joules?