طيب يا أستاذنا الكريم .. :
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1 - tt = 4 sec vo = ???? Ymax = ???? G = 9.8 m/sec^2 vf = zero
vo= 9.8 × 2 = 19.6 m /sec
ymax = v0^2 / 2g = 384.16 / 19.6 = 19.6 m
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2 - t total = 1.5 sec g = 9.8 m /sec^2 y=4.0 m v0 = ??? Vf1 = ??? Vf2 = zero
v0 = 9.8 × 0.75 = 7.35 m / sec
vf = 7.35 - 9.8 × 0.75 = 0 m / sec
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3 - t total = 4 sec v0=??? Ymax = ??? G=9.8 m /sec^2 vf = zero
vo = gt = 9.8 × 2 = 19.6 m / sec
ymax = 19.6^2 / 19.6 = 19.6 m
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بانتظار تعقيبك وشكرا .