gc textbook chapter 7 Linear Momentum (id: ae7bf145e)

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 debvp/ +j ;+h:ojjvk3collx qw0/q1w., jwbki5op(r.o xr ides into the rear end of a 2300-kg SUV stopped at a red light. The bumpers lock, the brakq0krwo pw5rx /(j.b qx.iwo, 1es 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 was 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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