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1. |
A bullet of 10 g mass comes out with an initial velocity of 1000 m/s and strikes the earth at a velocity of 500 m/s at the same level. What will be the work done (in water) by facing resistance to air? |
A. | 500 |
B. | 5000 |
C. | 375 |
D. | 3750 |
Answer» E. | |