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A ball is thrown vertical upward …

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A ball is thrown vertical upward with a velocity of 20 m/s from the top of multistorey building the height of the point from where the ball is thrown is 25 m from the ground . 1)how high will the ball raisa

    • Posted by Tanisha Lohar 8 years, 2 months ago

    CBSE > Class 11 > Physics
    • 1 answers

    Shankari Gk 8 years, 2 months ago

    V2^-u2^=2as =O2^-(20)2^=2×-10×s =-400=-20s -400÷-20=s Therefore,s=20 V=u+at =0=20+(-10)t =-20=-10t =-20÷(-10)=t Therefore,t=2s S=-20-25 =-45m S=ut+1.5at2^ =-45=0+1.5×-10×t2^ =-45=-5t2^ =t2^=45÷5 =t2^=9m =t=3s Therefore total time= 2s+3s =5s 》》》

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