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1. |
If a force of 250 N acts on a body at rest, the momentum required is 125 kg m/s. The time for which the force acts on the body is |
A. | 0.5 s |
B. | 0.2 s |
C. | 0.1 s |
D. | 0.3 s |
Answer» B. 0.2 s | |