pre calcu

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A ball is droped out of a window of a tall building. If it hists the ground 3.5s later, how high aboe the ground is the window?

• pre calcu -

the distance in metres is 4.9t^2 (from physics), where t is seconds and d is metres.
so the distance is 4.9(3.5)^2 or appr. 60 metres

• pre calcu -

h=1/2 g t^2

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