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A roller coaster has a mass of 250 kg. It drops from rest at the top of a hill that's 88 m tall. How fast is it going when it reaches the bottom? Acceleration due to gravity is g = 9.8 m/s2.

 A.41.5 m/s B.13.1 m/s C.52.2 m/s D.70.0 m/s

Respuesta :

olemakpadu
v² = u² + 2gs      

from rest u = 0,  g = 9.8 m/s²,  s = 88m

v² = 0² + 2*9.8*88
 
 v² = 1724.8

v  = √1724.8

v ≈ 41.5 m/s

Option A.

Answer:

41.5

Explanation:

finished test

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