1. (C) 80 m s = area under v-t graph = 1/2 (AG + BF) GF = 1/2 (5 + 15) 8 = 80 m

    (C) 80 m
    s = area under v-t graph
    = 1/2 (AG + BF) GF
    = 1/2 (5 + 15) 8
    = 80 m

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