Answer:
my bad ion even know what it is i just need sum points
Explanation:
Give me some answer choices and i will be happy to help
Answer: 81.619 kJ
Explanation:
Given
Mass of roller coaster is 
It reaches the steepest hill with speed of 
Hill to bottom is 51 m long with inclination of 
Height of the hill is 
Conserving energy to get kinetic energy at bottom
Energy at top=Energy at bottom

Answer:
i font know ewan madaling sabihin yan