A 350kg roller coaster starts from rest at point a and slides down the frictionless loop-the-loop shown in the figure below. a. How fast is this roller coaster moving at point B? b. How hard does it press against the track at point B? c. Solve for all the (v=?) that is missing from the equation. Solve and show solution and answer a,b and c. Please note of the direction.

A 350kg roller coaster starts from rest at point a and slides down the frictionless loop-the-loop shown in the figure below. a. How fast is this roller coaster moving at point B? b. How hard does it press against the track at point B? c. Solve for all the (v=?) that is missing from the equation. Solve and show solution and answer a,b and c. Please note of the direction.