The equation V=√19.6h gives the speed at impact, V metres per second, of an object dropped from a height of h metres. From what height must an object be dropped to impact the ground at a speed of 18.6 m/s?
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So, we have: 18.6 = √19.6h Show more…
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If an object is dropped from a height of $h$ meters, the velocity $v($ in $\mathrm{m} / \mathrm{sec})$ at impact is given by $v=\sqrt{2 g h},$ where $g=9.8 \mathrm{~m} / \mathrm{sec}^{2}$ is the acceleration due to gravity. a. Determine the impact velocity for an object dropped from a height of $10 \mathrm{~m}$. b. Determine the height required for an object to have an impact velocity of $26.8 \mathrm{~m} / \mathrm{sec}(\approx 60 \mathrm{mph})$. Round to the nearest tenth of a meter.
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