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 car at 45 km/h approac8y6b7mf /lz (;m) afmu7r ho mlw5cse7hes an intersection o0 0xc(nh2lfrz zlys1-p3-,b,fx x w wjust as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s b 0 r2 z,xllws(-b 0xcwyh1,xp-znoff3efore 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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