A) What minimum velocity must a roller coaster have such that the riders don’t fall out at the top of a loop with a radius of 12.0 m? [3 marks] B) What is the normal force a passenger of mass 60.0 kg experiences, If this same roller
coaster has a velocity of 13.0 m/s at the bottom of the loop? [5 marks]

100 miles per hour

Today, tubular steel tracks and polyurethane wheels allow coasters to travel over 100 miles per hour (160 km/h), while even taller, faster, and more complex roller coasters continue to be built. Hopefully i helped

Explanation:

6 cos 34, 6 sin 34 trig

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !