A train engineer started the train from a standstill and sped up to 5 meters per second, she then rounded a corner at a constant speed. She then sped the train up to 10 meters per second on the next straightaway. Next, the train chugged around another bend at 10 m/sec, and then its speed slowed to 5 meters per second after coming out of the bend. Finally, the train reached the station, and the engineer applied the brakes and brought the engine to a stop. How many times did the train accelerate?
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Answered by
7
Answer is six times.
More details on the answer:
We know that acceleration is nothing but change in velocity/speed. Speed of the train changes at the bends, while speeding up and slowing down.
1. When train sped up to 5 m/s, at start.
2. Rounding the corner
3. Sped up to 10 m/s
4. Chugged at another bend
5. slowed down at 5 m/s
6. While stopping at the station
Answered by
2
Answer:
D on USA TestPrep.
Explanation:
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