A 5kg object slides down a frictionless surface inclined at an
angle 30 degrees from the horizontal. The total distance moved by
the object along the plane is 10m. The work done on the object by
the force of the gravity is approximately..
a) 0.25 kJ
b) zero
c) 0.50 kJ
d) 0.58 kJ
e) 0.43 kJ