Solved: You are driving home in your 750-kg car at 15 m/s.

Chapter , Problem 88

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You are driving home in your 750-kg car at 15 m/s. At a point45 m from the beginning of an intersection, you see a greentraffic light change to yellow, which you expect will last 4.0 s,and the distance to the far side of the intersection is 65 m(Fig. 4-64). (a) If you choose to accelerate, your cars enginewill furnish a forward force of 1200 N. Will you make itcompletely through the intersection before the light turns red?(b) If you decide to panic stop, your brakes will provide aforce of 1800 N. Will you stop before entering the intersection?

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