Question

What is the answer?

please answer step by step


If a roller coaster starts with no initial velocity at a height of 2m , what would be the velocity of the coaster at the bottom of the track?

Answer 1

6.26 m/s

Step-by-step explanation:

Pretty slow.... the PE (Potential Energy) at 2m will be converted to KE (Kinetic Energy) at the bottom of the track (neglecting friction)

PE = KE

mgh = 1/2 mv^2 divide both sides of the equation by 'm'

gh = 1/2 v^2 multiply both sides by 2

2 gh = v^2 take sqrt of both sides

v = sqrt ( 2gh) = sqrt ( 2*9.81*2) = 6.26 m/s