A __ allows you to determine the position of an object

this is science plz helpp

I’m not sure about this question

Answerthe valence of an element or radical is equal to the number of positive or negative charges on the ion.

It maybe because uranus is made of gas but uranus has a solid core in the middle

Ke reqd to move from 0 to 50 will be proportional to 50x50 or 2500. this is equal to w.  to change vel from 50 to 150 you need energy prop to 22500 - 2500 = 20,000. this corresponds to 8w.  best answer is a) . work reqd is prop to velocity squared.