Iqra N.

asked • 10/20/17

Rock thrown vertically down. Find the time taken

A girl on a bridge throws a rock straight down at -12.5 m/s. It hits the ground 38.4 m below.
How much time did it take ?

1 Expert Answer

By:

Arturo O. answered • 10/20/17

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Iqra N.

Thank you very much for the solution, but the answer given is 1.08 s.
Report

10/23/17

Arturo O.

Solve the quadratic equation and see that 1.80 is the correct solution, rounded to 2 decimal places.  I suspect that 1.08 is a typo.  Where did that number come from?
Report

10/23/17

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