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1. |
Suppose the thrust force of a rocket varies with time t as F = 250(3t2 + 2t). Then find out the total impulse for a burn duration of 4s. |
A. | 10000 Ns |
B. | 20000 Ns |
C. | 40000 Ns |
D. | 80000 Ns |
Answer» C. 40000 Ns | |