Answer:
15.88m/s
Explanation:
At the top of the roller coaster you will have three forces acting on the roller-coaster. See the image below. Fc is the centripetal force (for an object in circular motion), Fg is the gravitational force, and Fn is the normal force. To achieve the minimum speed we assume the roller-coaster is barely touching the vertical loop and so the normal force is zero. This leaves two acting forces.

Answer:
P= 15A x 120 V P= 1800 W
I believe, I hope this helps
Explanation:
The answer is A. waterfall
To be considered as an engine , it should be a Man-made objects that could be used to produce power that creates motions.
From all the options above could be used to produce such power, but the waterfall is not made by mandkind
Answer:46.5
Explanation:is the topical formula of F= 30x+15
Answer:
I dont know this but I have an app for you if your really strangling
Explanation:
its called Qanda. it really good and teachers help you a lot