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A Ball is dropped from the window which is 8 metre above the ground the initial velocity of ball was 4 metre per second find the time which it take to reach the ground? |
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Answer» Answer: 0.92 seconds Explanation: Given :
To find : Using the second equation of motion : S=ut+½×at² 8=4×t+½×10×t² 8=4t+5t² 5t²+4t-8=0 By SOLVING the above quadratic equation, T = 0.92 seconds The time taken to reach the ground is 0.o2 seconds |
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