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

not too sure thinking all accelerations are pointed down

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada