gc physics textbook chapter 3 problems (id: adee7f7ca)

本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 通用国际物理

[填空题]
The pilot of an airplane traveling wants to drop supplies to flood victimyzr i8y1; ort1x 0wrzv g0a*s9s hs * kwe)/um w:4rl; asqr*x.gvt:fn0isolated on a patch of land 160 m below. The supplies should be dropped how many seconds beq)s:a:s*4/n xtu*;wm gf rerlhvk.0 w fore the plane is directly overhead?    s

参考答案: 5.71±2%


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