a stone is thrown vertically upwards with a velocity of 20 ms-'.find the maximum height reached by the stone and the total time of flight

a stone is thrown vertically upwards with a velocity of 20 ms-'.find t

1.	a stone is thrown vertically upwards with a velocity of 20 ms-'.find the maximum height reached by the stone and the total time of flight
Answer» U=20m/s v=0m/s accleration is not GIVEN so we TAKE 9.8m/s^ and it will be NEGATIVE as it is in UPWARD direction (opposite) . a=-9.8m/s^2 v^2-u^2=2as 0^2-20^2=2×(-9.8)s -400=-19.6s 400/19.6=s s=20.4m v=u+at 0=20+(-9.8)t -20=-9.8t 20/9.8=t 2.0sec total time is 2+2 =4 seconda

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a stone is thrown vertically upwards with a velocity of 20 ms-'.find the maximum height reached by the stone and the total time of flight

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