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Mechanics - can someone give me the solution to this please watch

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    the answers is 6.5m
    solution explain:
    here, t=1+0.6=1.6s. u=0m/s and g=10m/s2
    so applying the rule
    s=ut+0.5at2 (2 means square)
    so answer is 12.8m
    as it passed 2 floors, so the floors distence is 6.4m
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    thank you so so much.
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