gc physics textbook chapter 4 problems (id: 84054bc40)

本题目来源于试卷: gc physics textbook chapter 4 problems，类别为 IB物理学

[填空题]
A person stands on a bath.3grn3lvbh, w room scale in a motionlesb k7br1xtf+rao(ul5 9s elevator. When the elevator begins to move, the scale briefly reads only 0.75 of the person’s regular weight. Calculate the acceleratir( a57ufr bl9otbk1x+on of the elevator, and find the direction of acceleration.     ----待选择----downupward 

参考答案:
空格1: -2.5  空格2: down 


本题详细解析:

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