gc physics textbook chapter 3 problems (id: 29e03cf00)

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

[填空题]
An athlete executing aot 3wkonmkkprs5kb gfpsj-v2y-(,(-; 8 dtg2 )s h1j(a leu-t0b,yffx1xhl/long jump leaves the ground at a 28.0$^{\circ}$ angle and travels 7.80 m .
(a) What was the takeoff speed?   
(b) If this speed were increased by just 5.0 % , how much longer would the jump be?   

参考答案:
空格1: 9.6±2%  空格2: 8.6±2% 


本题详细解析:

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