document.write( "Question 821517: If an object has fallen a distance of 53 meters, approximately how long did the fall take in seconds? The distance is 50.17 meters \n" ); document.write( "

Algebra.Com's Answer #494251 by jsmallt9(3758) $\"\"$ $\"About$

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If we're talking about an object dropping (with no initial velocity and no other forces than gravity) and if we're on Earth, then
\n" ); document.write( " $\"d+=+9.8t%5E2\"$
\n" ); document.write( "where d is the distance traveled by the object, the 9.8 is the acceleration due to gravity (in meters/second/second). Since we know that the object dropped 54 meters:
\n" ); document.write( " $\"54+=+9.8t%5E2\"$
\n" ); document.write( "Divide by 9.8:
\n" ); document.write( " $\"5.51+=+t%5E2\"$ (rounded to two places)
\n" ); document.write( "Square root of each side (ignoring the negative square root since time must not be negative):
\n" ); document.write( " $\"2.35+=+t\"$ (rounded to two places) \n" ); document.write( "

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