For the following questions consider the diagram respresentimg a potion of an amusement park ride assume a 100kg car has 30,000 or potential energy at point a it moves down a frictionless track and comes to a stop as it compresses a huge spring at point D. Calculate how much kinetic energy the car has at point c.
How fast is the car moving? show work

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

b.a device that inputs heat into a cool object

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this