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A hoodlum throws a stone vertically downward with an initial speed of 12.0 m/s from the roof of a building,30.0 m above the ground. (a) how long does it take the stone to reach the ground
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A hoodlum throws a stone vertically downward with an initial speed of 12.0 m/s from the roof of a building,30.0 m above the ground. (a) how long does it take the stone to reach the ground

User KarmaEDV
by
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1 Answer

6 votes
s=ut +1/2at2
30=12t+1/2*10*t2
5t2+12t-30=0
User Benjarwar
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