- #1
shawli
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Homework Statement
I've attempted this problem for just Laura so far.
t1 = 2.00s
t2 = 10.4s - 2.00s = 8.40s
vi = 0.0m/s
vf at the end of 2.00s = vmax
For her displacement I have a little diagram:
|------------------|---------------------------|
...x.....xf = 100 - x...
where the split between the two sections occurs at whatever x is after 2.00s.
a=? for the initial time interval from 0.00s to 2.00s.
a=0 from 2.00s to 10.4s.
Homework Equations
For constant velocity: xf = xi + v*t
For constant acceleration:
The Attempt at a Solution
From t=0.00 to t=2.00:
(using eq'n 2.15, where xf=x, xi=0, vxi=0, and t1 = 2.00)
x = 0.5 * v * t2
x = 0.5 *v*2.00
x = v (?)
From t=2.00 to t=10.4:
(using constant velocity equation, where xi=0, and xf = 100 - x, and t2=8.40)
100 - x= v * t2
100 - x = v*8.40
And basically when I equate the two equations I don't get the right answer (which is a=5.32m/s...). Help!