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读《中小学数学》初中版2015第11期《对一道中考题的异议》一文,原题是这样的:某学校开展“青少年科技创新比赛”活动,“喜洋洋”代表队设计了一个遥控车沿直线轨道AC做匀速直线运动的模型.甲、乙两车同时分别从A、B出发,沿直线轨道到达C处,在AC上,甲的速度是乙的速度的1.5倍,设t(分)后甲、乙两遥控车与B处的距离分别为d_1、d_2,则d_1、d_2与t的函数关系如图,试根据图象解决下列问题:(1)填空:乙的速度v_2=____;(2)写出d_1与t的函数关系式;(3)若甲、乙两遥控车的距离超过10米时信号不
Reading “primary and middle school mathematics” junior high school edition 2015 eleventh “on a senior high school entrance examination questions” one article, the original title is this: a school to carry out “youth science and technology innovation competition ”, “radiant ” team design A remote control car along the straight track AC to do a uniform linear motion model.A, B two vehicles at the same time starting from A, B, along the straight track to reach C, AC, A speed B is 1.5 times the speed, set t (points) A, B two remote control car and B at the distance of d_1, d_2, then d_1, d_2 and t as shown in the function diagram, according to the image to solve the following questions: (1) fill in the air: B speed v_2 = ____; (2) Write the function of d_1 as a function of t; (3) If the distance between A and B remote control cars exceeds 10 meters