试题与答案

某跳伞运动员,体重800牛顿,降落伞的质量是20千克,当伞和运动员在空中匀速下降

题型:计算题

题目:

某跳伞运动员,体重800牛顿,降落伞的质量是20千克,当伞和运动员在空中匀速下降时,所受到的空气阻力是多大?(g取10N/kg)

答案:

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