John Landry
2022-07-28
Answered

The height of an object tossed upward with an initial velocity of 136 feet per second is given by the formula $h=-16{t}^{2}+136t$, where h is the height in feet and t is the time in seconds. Find the time requiblack for the object to return to its point of departure.

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Eve Good

Answered 2022-07-29
Author has **18** answers

$h=-16{t}^{2}+136t\phantom{\rule{0ex}{0ex}}h=0\phantom{\rule{0ex}{0ex}}16{t}^{2}=136t\phantom{\rule{0ex}{0ex}}t=22.6sec$

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Since a positronium has no proton, I would suggest $Z=0$ but I'm not sure if you can see the electron as the center of mass and therefore $Z=1$.