Respuesta :
Answer:
The coaster tracks serve to channel this force — they control the way the coaster cars fall. If the tracks slope down, gravity pulls the front of the car toward the ground, so it accelerates. If the tracks tilt up, gravity applies a downward force on the back of the coaster, so it decelerates.
Explanation:
“Roller Coaster Physics” might have been different if the author’s purpose had been to warn readers of the dangers of roller coasters because when delivering these pieces of information, warnings would have followed. Examples are;
- If the tracks slope down, gravity pulls the front of the car toward the ground, so it accelerates. (The author might have warned that during acceleration speed should be reduced to avoid accidents)
- In this way, the course of the track is constantly converting energy from kinetic to potential and back again. (Instead of saying that these fluctuations make roller coasters fun, he would have warned that these fluctuations can be sudden so people should be alert)
Warnings are reminders that should make people alert to dangers.
“Roller Coaster Physics” is an informational article, but it could be aimed at warning readers of the dangers of roller coasters if the writer had added specific warnings to readers after stating some features of roller coasters.
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