Sunday

December 21, 2014

December 21, 2014

Posted by **HELP** on Monday, September 12, 2011 at 10:28pm.

(a) If subway stations are 8.6 km apart, what is the maximum velocity that can be obtained between stations?

(b) How long does it take to travel between two stations?

(c) The train stops for a total of 50 s at each station. What is the overall average velocity of the train from station to station?

I got part a right with an answer of 74.01 m/s.

When I did parts b & c, my answers were incorrect.

Any help would be greatly apreciated!

- Physics -
**drwls**, Tuesday, September 13, 2011 at 7:55amDistance travelled while accelerating = 4.3 km

Vmax = sqrt(2aX) = 74.01 m/s

Average velocity = 37.0 m/s

Total travel time between stops

= 8600 m/37.0 m/s = 232 s

Average velocity including one stop:

(8600 m)/(232 + 50) = 30.5 m/s

**Answer this Question**

**Related Questions**

physics - A subway train is designed with a maximum acceleration of +0.17 m/s2, ...

physics - (a) If the maximum acceleration that is tolerable for passengers in a ...

Physics - (a) If the maximum acceleration that is tolerable for passengers in a ...

English - One day Minsu and Cathy were on the subway. The subway stopped. An old...

Physics - An animal loving subway train conductor sees a happy little subway rat...

physics - A subway accelerate gradually (a= 1.2 m/s/s) from rest at one station ...

physics - In the movie Spiderman 2, there's a famous minute long scene where ...

physics - A SUBWAY TRAIN IS MOVING WITH A CONSTANT VELOCITY ALONG A LEVEL ...

English - What are the strong points of the subway? The subway is clean, safe ...

statistics - the subway train has 18 doors and starts with 15 passenger. if each...