gc textbook chapter 2 Kinematics in One Dimension (id: 2091f2fa5)

本题目来源于试卷: gc textbook chapter 2 Kinematics in One Dimension，类别为 IB物理学

[问答题]
A person driving her kh4ng,;9hmo8ripc 2 f car at 45 km/h approaches an intersectio.s92tydmlews bnhe 1mp.* p5 9n just as the traffy2m el s5hd9pb1.s9t.*enm wpic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning red, and she is 28 m away from the near side of the intersection (Fig. 2–31). Should she try to stop, or should she speed up to cross the intersection before the light turns red? The intersection is 15 m wide. Her car’s maximum deceleration is $-5.8 m/s^2$ , whereas it can accelerate from 45 km/h to 65 km/h in 6.0 s. Ignore the length of her car and her reaction time.

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