The work done on a body by Earth's uniform gravitational force near its surface depends on the mass of the body, the acceleration due to gravity, and the difference in height that the body traversed.
Second, only the speed of the roller coaster is considered; there is no information about its direction at any point.
Unit symbols are in Roman type.
So inside of a sphere, there is no gravitational force at all! Use of this site constitutes acceptance of our and and Wired may earn a portion of sales from products that are purchased through our site as part of our Affiliate Partnerships with retailers.
There's a very, very useful change of variables that we can make here.
For example, the priest wrote in 1551 that bodies in uniformly accelerate.