Hey !
The anwer is : A.
Because an object is moving at constant speed ( whic is distance/time) when the distance and the time grow directly proportional . (it means when the distance is getting bigger,then the time is getting bigger equally).
There are supposed to be numbers in these places:
" _____ of methane"
" ... pressure of exactly _____ "
" ... temperature of _____ "
I've seen a lot of questions with missing numbers before, but I think this is the first time I ever saw a question where even the number of significant digits to round the answer to is missing.
"Round your answer to _____ significant digits."
<span>The motion of the medium is parallel to a longitudinal wave
and perpendicular to a transverse wave.</span>
1.uniti m/s indicate it is in SI unit
2.It gives the distance covered by the object in unit time
3.Unit indicates that it velocity not other unit
4.In a problem if other units are other than SI unit you can convert it
5.For comparison purpose you should know the unit unless you can't or it may be wrong
i think so