# physics

A particle moves along the x-axis from an initial position xi to a final position xf. Of the following values of xi and xf, which results in a negative displacement? (a) xi = 6 m, xf = 4 m (b) xi = ?4 m, xf = ?2 m (c) xi = ?4 m, xf = 2 m (d) xi = 4 m, xf = 6 m (e) xi = ?4 m, xf = 4 m

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1. Some characters are not properly displayed on my computer, I assume it to be:

A particle moves along the x-axis from an initial position xi to a final position xf. Of the following values of xi and xf, which results in a negative displacement? (a) xi = 6 m, xf = 4 m (b) xi = -4 m, xf = -2 m (c) xi = -4 m, xf = 2 m (d) xi = 4 m, xf = 6 m (e) xi = -4 m, xf = 4 m

Displacement is xf-xi. If xf-xi > 0, the displacement is positive.
If xf-xi < 0, it is negative.

So if you calculate xf-xi and check the sign, you will get the answer quite soon.

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posted by MathMate

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