That is -300 J, because the work = the force times the distance. When the distance is a positive value when it is going down, the distance is a negative value when it is going up. The only thing that change is the minus, the absolute value of the work remains the same
A) The rhino's average velocity on the x-axis is
. The position x after time t=21.5 s can be found by using the relationship:
where we used
as the x-position at time t=0, since the rhino was at the origin.
SImilarly, the average velocity on the y-axis is
, and the y-position after time t=21.5 s can be found by using:
where we used
since the the rhino was at the origin at time t=0.
b) The distance of the rhino from the origin can be calculated by calculating the resultant of the displacement of the rhino on both axes:
If it were possible to give that information over in a few paragraphs or a few mimutes, then you'd see little stores everywhere, where you could drop in for an hour or an afternoon, pay a few bucks, and learn Physics. You don't, because you can't, because it isn't.
Here are a few things you definitely need. But I have to tell you: If you don't put time and effort into learning them, they won't do you much good.
==> F=m a. ==> Total mass is conserved. ==> Total energy is conserved. ==> Everything falls at the same rate. ==> Sound needs material to travel through. Light doesn't. ==> Light, radio, heat, X-rays, and ultraviolet radiation are all the same thing. ==> It takes force on an object to make it speed up, slow down, or curve. A moving object with no force acting on it keeps going in a straight line at the same speed forever. ==> Gravity attracts every speck of mass in the universe to every other speck. The forces of attraction are greater when the masses are greater and closer together.
Answer:
Light behaves differently in space than on Earth.
Explanation:
Because the gravity field is greater near earth than in most of space. Not the areas near stars, black holes, pulsars, and such but in the vast emptyness between the clumpy spots.
