Here is a quick puzzle. It is pretty easy so you might try computing the answer in your head. Suppose you are driving at 60 mph and apply the brakes. Suppose you can brake with a force of 1g. How far will you travel before stopping? For this puzzle assume 1g = 32 ft/(sec)/(sec).
Added note: As discussed in the comments I was a bit sloppy when I said "brake with a force of 1g". What I meant of course was brake so as to produce a deceleration of 1g. See this wikipedia article for much more about this common misnomer.
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