You are standing in Top of a building that is under construction.Someone Drops a box of nails off the side of the building,and you count that it takes at least 5 seconds for the box
to hit the ground.The time
it takes something to fall from a distance d (in meters)can be found from the equation

A.using this equation,Figure out the range of possible heights the building has.

B.Later in the day you decide to try a more precise experiment.You stand at a differnt height in the building and Drops the box of nails,but this time you use a stopwatch.You measure that it took exactly 3.4 seconds for the nails to hit the ground.How high were you when you dropped the nails?

$+ = \sqrt{ \frac{2d}{4.9} }$

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Ответ:

nae878

27.05.2023

Mathematics

Using combination

$\\ \sf\longmapsto {}^{10}C_6$

We know

$\boxed{\sf {}^nC_r=\dfrac{n!}{r!(n-r)!}}$

$\\ \sf\longmapsto \dfrac{10!}{6!(10-6)!}$

$\\ \sf\longmapsto \dfrac{10!}{6!(4!)}$

$\\ \sf\longmapsto 210$

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