Answer:
The roller coaster has potential energy
P.E = 95863.6 Joules
Step-by-step explanation:
Potential energy is the energy contained in an object that is not moving. Since the roller coaster is on a fixed position at the top of the hill, it therefore has potential energy.
Given
Mass M = 134kg
Height h = 73 meters
Acceleration due to gravity g = 9.8m/s^2
Potential energy = Mgh
P.E = 134 x 9.8 x 73
= 95863.6 Joules
<span>Ryan rate = 1/5 job/hr
Castel rate = 1/6 job/hr
Together rate = 1/x job/hr
Equation:
1/5 + 1/6 = 1/x
6x + 5x = 30
11x = 30
x = 2 8/11 hr = 2 hr (8/11)60 = 2hr 47 minutes (time to do the job together)</span>