Posted by **tammi** on Thursday, September 20, 2012 at 7:42pm.

A cara accelerates uniformly from rest to a speed of 21.9 km/h in 8.5 s. Find the distance it travels during this time.

- physics -
**Scott**, Saturday, September 22, 2012 at 8:18pm
because it starts from rest and accelerates uniformly, the average velocity is 1/2 the final velocity

convert the km/h into m/s [multiply by 1000/3600]

the distance is the average velocity, multiplied by the time (8.5 s)

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