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A body is dropped from a height . IT moves a distence of 24.5 meter in the last secound hitting the ground . find the height from which it was dropped? |
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Answer» ONG>ANSWER: the body is dropped from a height of 19.6 METERS. Explanation: By formula Sn=u+a(n-0.5) u = 0 a = g =9.8 24.5=9.8(n-0.5) 24.5=9.8n-4.9 9.8n=19.6 n=2. So total time is two seconds. Height from which it was dropped H is equal to H=1/2gt^2 H=0.5*9.8*2*2 H=9.8*2 H=19.6 So the body is dropped from a helght of 19.6 meters. |
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