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Sagot :
True, Â Mechanical energy is chosen because the roller coaster chooses one energy owing to friction and air resistance as it travels down the track.
what is friction ?
When we throw a ball on the ground, it starts moving with a certain speed. But ideally there would be no force acting in the direction of motion and according to Newton's first law the ball would keep rolling, but this doesn't happen. Instead, the ball stops after traveling a certain distance, so a force must be applied to it. We call this force "friction".
Friction provides the traction needed to walk without slipping. Friction is useful in most cases. However, they also offer a major countermeasure to movement. In addition, about 20% of car engine power is consumed to overcome friction in moving parts. In the next section, we take a look at some of these factors.
True Mechanical energy is chosen because the roller coaster chooses one energy owing to friction and air resistance as it travels down the track.
To learn more about friction follow the given link:https://brainly.com/question/31226
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