【考点】函数图像与实际应用题的联系
【难度系数】★★★☆☆
【答案评析】小球从某一高度自由落体,降落经过2feet的次数,意味着图形与纵坐标H=2这条直线的相交次数,由图中图像可知,图形与H=2相交了3次。(第一次落下,第二次反弹,第三次再落下)
答案选C
【考点】函数图像与实际应用题的联系
【难度系数】★★★☆☆
【答案评析】小球从某一高度自由落体,降落经过2feet的次数,意味着图形与纵坐标H=2这条直线的相交次数,由图中图像可知,图形与H=2相交了3次。(第一次落下,第二次反弹,第三次再落下)
答案选C
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