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Please solve this..... |
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Answer» Explanation: → At FIRST FIND the height above the ground at which STONE is STOPPED.H1 max = ut + 1/2gt²H1 = 0 + 1/2×9.8× 5×5H1= 122.5mNow ,It is given in question that srone stopped after 3sec(Vertical direction travelled in 3sec)=H2= 0+1/2×9.8×3×3H2= 44.1mRemaning distance= (122.5-44.1)=78.4mNow,78.4 = ut+1/2×9.8×t²78.4=0+4.9t²t= 4secTotal time taken =[4+3]=7sec✓✓Happy to HELP!:) |
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