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1. |
A ball of 0.1 kg is dropped from rest. When it falls through a distance of 2 m, the work done by the force of gravity is (g = 9.8 m/s2): |
A. | -1.96 J |
B. | 1.96 J |
C. | 0.98 J |
D. | -0.98 J |
Answer» C. 0.98 J | |