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Ne is dropped from the top of a cliff of height hin second later a sec the same cliff with a vertically downward velocity u. Show that the two stones will reach the bottomcliff together, if gh(u-gn)"gw (211- gn)eys:rahticle moving in a straight line is observed to be at a distance 'a' from a marked point initially, at ace 'b' after an interval of n seconds, to be at a distance 'c' after 2n seconds and at a distance 'd'In seconds. Prove that if the acceleration is uniform, d-a=3(c-b) and that the acceleration is equala-26n? |
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Answer» Explanation:A stone is dropped from the top of a CLIFF of height h. ''n'' SECONDS later, a second stone is projected downwards from the same cliff with a vertically downward velocity u. Show that the two STONES will reach the bottom of the cliff together, if 8h(u-GN)^(2) = gn^(2)(2u - gn)^(2) what can you SAY about the limiting value of ''n'' ? |
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