Question #f33b1

Question

Question #f33b1

1 Answer

Impact of this question

1227 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-06-10T02:48:52

$v = 40 \frac{m}{s}$ $color(blue)[v = 40 "m"/"s"$

Explanation:

Since the body is falling under the influence of gravity (free fall), we can use the following equation to find the velocity at which the body will hit the ground

$a a a a a a a a a a a a a a a a a a a v = \sqrt{2 h g}$ $color(white)(aaaaaaaaaaaaaaaaaaa)color(orange)[v = sqrt(2hg)}$

Where
$h = height at which the body falls with respect to some level (m)$ $"h = height at which the body falls with respect to some level (m)"$
$g = gravitational acceleration constant (9.8 \frac{m}{s^{2}})$ $"g = gravitational acceleration constant" (9.8 m/s^2)$

$a a a$ $color(white)(aaa)$

Plugin and solve (ignored units)

$v = \sqrt{2 h g} \to v = \sqrt{2 \times 80 \times 9.8}$ $v = sqrt(2hg)->v = sqrt(2xx80xx9.8)$
$v = 40 \frac{m}{s}$ $color(blue)[v = 40 "m"/"s"$

rounded to $1$ $1$ significant figure, the number given in the problem.

Science

Math

Humanities

... and beyond

Question #f33b1

1 Answer

Explanation:

Related questions

Impact of this question