- #1

Starrrrr

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**1.**

A train leaves a station from rest with a constant acceleration of 0.3m/s2. It reaches a maximum speed after 3 minutes and maintains this speed for a further 5 minutes, when it slows down with a deceleration −2 m/s2 until it comes to rest at the next station. How far apart are the stations?

A train leaves a station from rest with a constant acceleration of 0.3m/s2. It reaches a maximum speed after 3 minutes and maintains this speed for a further 5 minutes, when it slows down with a deceleration −2 m/s2 until it comes to rest at the next station. How far apart are the stations?

**2.**

s=1/2(a)(t)^2

s2-s1 or s1-s2 not sure.

s=1/2(a)(t)^2

s2-s1 or s1-s2 not sure.

## The Attempt at a Solution

: a1=0.3ms^-2 t1=180s a2=-2ms^-2 t2=300sThen I used the s=1/2at^2 formula and found that s1=4860m and s2=-90000m

This is the part I'm stuck on is it s2-s1 or s1-s2 to find how far apart the stations are?[/B]

When I use the s2-s1 it gives me a negative value and I think there is no such thing as a negative distance.