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1. |
A body of mass 20 kg falls freely in vacuum. It has fallen through a vertical distance of 50 m. The gravitational acceleration may be assumed as 10 m/s2. What is the thermodynamic work done by the body? |
A. | 1000 Nm |
B. | 10 kJ |
C. | 0 |
D. | 1 kNm |
Answer» D. 1 kNm | |