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19. A body is released from a great height and falls freely towards the earth. Another body is releasedfrom the same height exactly one second later. The separation between the two bodies, two secondsafter there lease of the second body is:(A) 4.9 m(B) 9.8 m(C) 19.6 m(D) 24.5 m |
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Answer» for body 1disp. in 3 second = 1/2*9.8 for body 1 disp. in 3 second = (1/2)9.8×9 = 44.1 for body 2 disp. in 2 second =(1/2)9.8×4 = 19.6 separation after 2 second of leave 2nd body = 44.1-19.6 =24.5 24.5 |
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