Free fall

Lloyd fall from height 7 m. Calculate the speed he hit the ground when falling with acceleration g = 9.81 m/s²

Correct answer:

v =  42.19 km/h

Step-by-step explanation:

$v=9.81\cdot \sqrt{{\displaystyle \frac{2\cdot 7}{9.81}}}\cdot 3.6=\sqrt{2\cdot 7\cdot 9.81}\cdot 3.6=42.19\text{ km/h}$

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