Question

A roller coaster ride at an amusement park lifts a car of mass 700 kg to point A at a height of 90 m above the lowest point on the track, as shown. The car starts from rest at point A, rolls with negligible friction down the incline and follows the track around a loop of radius 20 m. Point B, the highest point on the loop, is at a height of 50 m above the lowest point on the track. 1. What is the maximum speed? Neglect friction and show all work.2. what is the kinetic energy at point b. neglect friction show work.​

Answer 1

Answer:

all of them

Explanation:

it is the same it never changes