Posted by **Anonymous** on Monday, September 30, 2013 at 10:13pm.

The position of a toy locomotive moving on a

straight track along the x-axis is given by the

equation

x = t

4 − 6 t

2 + 9 t ,

where x is in meters and t is in seconds.

The net force on the locomotive is equal to

zero when t is equal to

Answer in units of s

- physics -
**Anonymous**, Tuesday, November 26, 2013 at 6:34pm
0.852

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