A single frictionless roller-coaster car of mass m = 750. kg tops the first hill with speed v = 15.0 m/s at height h = 20.0 m as
shown. (show work)
Find the speed of the car at points A, B and C. Show all your work. (Hint: to start, find the total mechanical energy at the top of the first hill.)
Find the speed of the car at points A, B and C. Show all your work. (Hint: to start, find the total mechanical energy at the top of the first hill.)
1 answer:
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Answer:
m = 2.01[kg]
Explanation:
This problem can be solved using Newton's second law which tells us that the force applied on a body is equal to the product of mass by acceleration.
where:
F = force = 12.5 [N]
m = mass [kg]
a = acceleration = 6.2 [m/s²]