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Gaokao Physics Practice Question

无风时,雨滴受空气阻力的作用在地面附近会以恒定的速率竖直下落。一质量为 $m$ 的雨滴在地面附近以速率 $v$ 下落高度 $h$ 的过程中,克服空气阻力做的功为(重力加速度大小为 $g$) ( )

  1. A.0
  2. B.$mgh$
  3. C.$\frac{1}{2}mv^2 - mgh$
  4. D.$\frac{1}{2}mv^2 + mgh$

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