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gc textbook chapter 7 Linear Momentum (id: ae7bf145e)

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admin 发表于 2024-12-13 10:38:55 | 显示全部楼层 |阅读模式
本题目来源于试卷: gc textbook chapter 7 Linear Momentum,类别为 通用国际物理

[填空题]
A 920-kg sports car collides into the rear end of a 2300-kg SUV stopped a-sg)4bqv9 y,c1 ki imzi7/fe t+1xbt5 l6d jwvt a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.8 m before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is 0.80, calculates the speed of the sports car at impact. What wej+5il w17t/t6fxv bdas that speed?(Let A represent the sports car, and B represent the SUV) $\approx$    m/s




参考答案: 23±2%


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