A helicopter is ascending vertically with a speed of 5.77 m/s. At a heightof 145

Question

A helicopter is ascending vertically with a speed of5.77 m/s. At a heightof 145 m above theEarth, a package is dropped from a window. How much time does ittake for the package to reach the ground? [Hint: Thepackage's initial speed equals the helicopter's.] A helicopter is ascending vertically with a speed of5.77 m/s. At a heightof 145 m above theEarth, a package is dropped from a window. How much time does ittake for the package to reach the ground? [Hint: Thepackage's initial speed equals the helicopter's.]

Explanation / Answer

     s = ut +(1/2) gt2      145 m = (5.77 m/s) t +(0.5) (9.8) t2 on solving So the time taken for the package to reach the groundis           t=   4.8828 s on solving So the time taken for the package to reach the groundis           t=   4.8828 s

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