Question

I have a really easy physics question that should only take 2 minutes to do. Help?

Answer 1

A train engineer started the train from a standstill and sped up to 5 miles per second, rounded a corner at constant speed, and sped up to 10 miles per second. Next the train chugged up a hill and its speed slowed to 5 miles per second. At the top of the hill, the train reached flat ground, the engineer applied the brakes and brought the engine to a stop. How many times did the train accelerate?

Answer 2

I think its B????

Answer 3

Is it B?

Answer 4

What are your answer choices? To accelerate means to speed up.

Answer 5

Oh man Im sorry

A)
2
B)
4
C)
5
D)
7

Answer 6

No worries. Ok, without giving you the answer...if you're accelerating you're speeding up. If you're decelerating it means you're slowing down. When you put brakes on you're decelerating. So go through and read what the engineer did throughout the trip then make your decision. Good luck :)

Answer 7

To walk you through it: A train engineer started the train from a standstill and sped up to 5 miles per second-it went from not moving, to moving. It sped up-is that acceleration?

Next, it rounded a corner at constant speed and sped up to 10 miles per second-ok, it was at the same speed during the turn, but then sped up. Is that acceleration?

After that, the train chugged up a hill and its speed slowed to 5 miles per second-if it's chugging up the hill, did it say that the engineer increased the speed? If so, that's acceleration.

At the top of the hill, the train reached flat ground, the engineer applied the brakes and brought the engine to a stop. Is that acceleration if the train stops?

Pick the best answer from your answer choices.

Answer 8

I got it wrong anyway.

Answer 9

Did you stick with four?
What was the correct answer?
Do you understand the question now?