F=MA 要加速,动力要大于阻力
P=FV 要保持加速,在力不变的情况下,功率就要不断加大(F不变,V变大,P也要加大)
F=MA 要加速,动力要大于阻力
P=FV 要保持加速,在力不变的情况下,功率就要不断加大(F不变,V变大,P也要加大)
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