Acceleration Position question

1. Sep 22, 2011

newboo

A rocket sled for testing equipment under
large accelerations starts at rest and acceler-
ates according to the expression
a = (1.7 m/s3) t + (7.9 m/s2) .
How far does the sled move in the time
interval t = 0 to t = 1.9 s ?

2. Sep 23, 2011

omoplata

You can use $a = \frac{d^2 x}{d t^2}$.

Just integrate it twice with the appropriate boundary conditions.