Question

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Answer 1

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µÃ   ${s}_{1}^{\;}=3.2m$
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µÃ    ${a}_{3}^{\;}=2m/{s}_{\;}^{2}$                              
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 $t={t}_{1}^{\;}+{t}_{2}^{\;}+{t}_{3}^{\;}=2s$                      ¢á
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