Question 1182710
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What is "observable distance from the ground" ?



What is this "constant velocity of 6 ft/s" ?   --- I am asking because velocity is not only a magnitude: it is a vector and has its direction, too.



Could you clarify, PLEASE.



Math problem should not be formulated so carelessly . . . 



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Also, from the Internet


<pre>
    A typical commercial passenger jet cruises at a speed of about 460  -  575 miles per hour.
</pre>


So, when you create your own Math problems, try to make it realistic.