according to the author, what effect do the cart's wheels have on most roller coasters?
a)
the wheels cause friction.
the wheels eliminate friction.
the wheels give the cart kinetic energy.
the wheels give the cart potential energy.

The Cartwheels cause friction.

Option A.

Explanation :

The cart on the roller coaster works on the principle of conservation of energy which says that the energy is only transformed from one form to another. It is not lost.

When the cart with wheels on the roller coaster goes up, the gravitational potential energy increases with height and is the highest at the highest point on the roller coaster. As the cart comes down, the potential energy is converted into kinetic energy. The kinetic energy is the highest at the bottom of the coaster.  

Friction is offered by air and the wheels. That is why the roller coaster will not go on forever unless it provided some external energy.  

explanation:

sacrifice is a phenomenon that is largely lacking in modern society. in the era of consumer philosophy and selfish goals, people began to forget about disinterested motives that bring not material but moral satisfaction.

it is very good that the attention of schoolchildren and students is attracted to sacrifice through writing academic papers. the curriculum of educational institutions includes a wide variety of topics connected with this issue. young people express their views and share experiences regarding parental disinterested love, spiritual growth through sacrifice, functions of this phenomenon in family and social relations.

if you are on this page, for sure, you also have to perform a similar task. perhaps, you need to write a “sacrifice in sport” essay. pedagogues especially like to assign something like a “sacrifice of a teacher” essay so that students know what hard work is being done for the sake of their good. there can be many different options.

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