gc physics textbook chapter 6 problems (id: 3ed200453)

本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学

[填空题]
Suppose the roller cmjr:oq fymey c(we2b: zxuod 798+) txj:7t:uz em0mg(j *:a 5 kzf6zn d9os:yx11kddoaster in Fig. 6–41 passes point 1 with a speed of If the average force o5n1ad 9j( 0szm x y1o6zk:kmed:*fgdzf friction is equal to one-fifth of its weight, with what speed will it reach point 2? The distance traveled is 45.0 m. $\approx$    m/s

参考答案: 23±2%


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