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Given: t=3s

a) d=gt²/2
d= -44.1m = Hence, the cliff is 44.1 m high

b) vf²=vi²+2gd
    vf= 29.4m/s = Then the speed of the stone is 29.4m/s

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Bakit po naging -9.8 m/s^2? Diba gagamitin lang po ang - sa gravity kapag pataas?
Vertical motion kasi eh. Downward yung direction niya so gravity is present :)
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