gc physics textbook chapter 3 problems (id: 41c999d50)

本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 IB物理学

[填空题]
You buy a plastic darko*n55vet9cd t gun, and being a cleveicn qu4ng8 62kr physics student you decide to do a quick calculation to find its maximum horizontal range. You shoot the gun straight up, and it taken64kiq8 2c gnus 4.0 s for the dart to land back at the barrel. What is the maximum horizontal range of your gun?   

参考答案: 39±2%


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