Answer:
The roller coaster is going at 39.1 m/s when it reaches the bottom
Explanation:
We use conservation of mechanical energy to solve this problem. So, we need to estimate the potential energy of the cart at the top of the hill while it is sitting steady there. Such will give us the cart initial Total Energy (TE) since its kinetic energy at that moment is zero (the cart is not moving, just sitting at the top of the hill).
Its initial potential energy (Ui) is therefore: 
Notice also that all units given are in the SI system, (including the acceleration of gravity g) and therefore the answer is in Joules.
As we said, this initial potential energy equals the Total Energy (TE) of the roller coaster because its initial Kinetic Energy (Ki) is zero.
When we look at what happens the instant the cart reaches the bottom, at that point it has all kinetic energy and zero potential energy (h is zero at the bottom of the hill). Final Kinetic Energy is by definition: Kf =
Therefore, the conservation of mechanical energy tells us that:

We can solve for the final velocity of the roller coaster in this equation by solving for it in the equation:

The velocity should result with units of meters/second since all quantities were given in SI units.
They are both formed by deposited river sediment.
Halitic rocks have a large mineral layer of evaporite sedimentary rock, which is produced from drained lakes, playa and closed seas.
The difference between Halit rock layers and other rock layers is the element in it. The element in the Halit rock layer is sodium chloride.
<h2>Further explanation
</h2>
Halit Rock Layer is a type of salt, a mineral form (natural) from sodium chloride (NaCl) or better known as rock salt.
Knowledge about the layers of soil and rocks on the surface of the earth is stratigraphy. Stratigraphy is the study of the history, composition and relative age and distribution of bedding layers and the interpretation of rock layers to explain the history of the Earth.
Learn More
- Sodium chloride (NaCl) brainly.com/question/7007192
- stratigraphy brainly.com/question/12372481
Details
Class: Middle School
Subject: Physics
Keywords: Rock Layer, Halit Rock, Stratigraphy
Answer:
during respiration physical and chemical change both are occuring
Explanation:
Answer and Explanation:
Stars create energy primarily through the fusion of hydrogen into helium through nuclear reactions.