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20 April, 20:40

A rock rolls down a steep hill. it's initial velocity is 1 meter per second. by the time it reaches the bottom of the hill 30 seconds later, it's velocity is 7 meters per second. what is the acceleration of the rock?

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  1. 20 April, 20:42
    0
    By applying

    a=v-u/t

    a=1-7/30

    a=-6/30

    a=-0.2ms^-2
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