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Julli [10]
3 years ago
6

What is the velocity of an object that has fallen 76 feet

Mathematics
1 answer:
krok68 [10]3 years ago
7 0
Ignoring air resistance...

vf^2-vi^2=2gs, where vf is final velocity, vi=initial velocity, g=acceleration due to gravity, and s is the displacement of the object...

For an object being dropped, vi=0, so we have only have final velocity.

v^2=2gs

v=-√(2gs), g≈-32ft/s^2, s=-76

v=-√(2(-32)(-76))

v=-√4864

v≈ -69.74 ft/s  (to nearest hundredth of a foot per second)

It's negative because the object is falling, or height is decreasing :P
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Find m/KMN. L 60° K 1⁰40 6x (11x+15)° N​
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  114°

Step-by-step explanation:

The exterior angle is the sum of the remote interior angles.

__

<h3>setup</h3>

  (11x +15)° = 60° +6x°

<h3>solution</h3>

  5x = 45 . . . . . . . . . divide by °, subtract 15+6x

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<em>Additional comment</em>

Both the sum of interior angles and the sum of angles of a linear pair are 180°. If M represents the interior angle at vertex M, then we have ...

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Equating these expressions for 180° and subtracting M gives the relation we used above:

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