A sportscar can accelerate uniformly to [tex] 120 \frac{mi}{h} [/tex] in [tex] 30 \ s [/tex]. Its maximum braking rate cannot exceed [tex] 0.7g [/tex]. What is the minimum time required to go [tex] \frac{1}{2} \ mi [/tex], assuming that it begins and ends at rest.(adsbygoogle = window.adsbygoogle || []).push({});

So [tex] 120 = 0 + 30a, \ a = 4 [/tex].

Then [tex] \frac{1}{2} = 2t^{2} [/tex]. But I know I have to incorporate the braking rate.

How would I proceed from here?

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# Homework Help: Sportscar acceleration problem

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