(PLEASE HELP! Will give Brainliest Answer)
The coaster below starts from rest at point A.
It has a mass of 872 kg. There is no friction or air resistance.
Point A is 50 meters above ground. Point B is 20 meters above ground.
Calculate the speed of the coaster at point B.
A) 24 m/s
B) 50 m/s
C) 20 m/s
