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1.足球运动员把足球踢向空中,若不计空气阻力,则图1是表示足球在空中飞行的受力图,正确的是(G 表示重力,F表示脚对球的作用力)错解:C足球
1. A football player kicks a soccer ball into the air. If air resistance is not included, Figure 1 shows the force diagram of a football flying in the air. The correct one is (G is gravity, F is the force of the foot on the ball). football