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Question Number 18046 by virus last updated on 14/Jul/17

Answered by mrW1 last updated on 14/Jul/17

$${\mathrm{t}}_{\mathrm{P}-\mathrm{D}}=10/2=5\mathrm{s}$$$${\mathrm{t}}_{\mathrm{P}-\mathrm{B}}=6/2=3\mathrm{s}$$$$\mathrm{h}={\mathrm{h}}_{\mathrm{P}-\mathrm{D}}-{\mathrm{h}}_{\mathrm{P}-\mathrm{N}}=\frac{1}{2}\mathrm{g}(5^2-3^2)=80\mathrm{m}$$

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