Question 1131295
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<pre>
To get the answer, you need to solve the equation


    h(t) = 0,  which is


    -16t^2 + 60 = 0,   or,  which is the same,


     16t^2 = 60,

     
      t = {{{sqrt(60/16)}}} = 1.94 seconds  (approximately; valid with two decimal places).   <U>ANSWER</U>
</pre>

Solved.