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动量定理

> 机车从静止开始沿平直轨道做匀加速运动，所受的阻力始终不变，在此过程中，下列说法正确的是（　　） A．机车输出功率逐渐增大 B．机车输出功率不变 C．在任意两相等时间内，机车动能变化相等 D．在任意两相等时间内，机车动量变化大小相等

问题：

发布时间：2024-09-11

机车从静止开始沿平直轨道做匀加速运动，所受的阻力始终不变，在此过程中，下列说法正确的是（　　）

A．机车输出功率逐渐增大

B．机车输出功率不变

C．在任意两相等时间内，机车动能变化相等

D．在任意两相等时间内，机车动量变化大小相等

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