- #1
mybrohshi5
- 365
- 0
Homework Statement
How much time does it take for this train to travel 9.0 km?
The stations at which the trains must stop are 1.8 km apart (a total of 6 stations, including those at the ends).
Assume that at each station the train accelerates at a rate of 1.1 m/s^2 until it reaches 94 km/h, then stays at this speed until its brakes are applied for arrival at the next station, at which time it decelerates at -2.1 m/s^2. Assume it stops at each intermediate station for 25 s.
Homework Equations
i thought i would need the equation d=vi(t) + 1/2(a)(t^2)
The Attempt at a Solution
I know it only needs to travel to 5 stations to be 9.0 km but, i do not even really know how to start this one.
I converted all the units to m and m/s so...
94 km/h = 26.1 m/s
1.8 km = 1800 m
9 km = 9000 m
HELP PLEASE :)
Last edited: