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# PE curves?

A 1D PE curve has Point A near the top of the curve on the left side and Point B is further along on the curve at the vertex.

Would a particle at Point A be considered positive, negative, or undeterminable?

If a particle was moving towards Point B with a positive velocity at the point, would the velocity speed up, slow down, or remain unchanged after it passed Point B?

Say there is a point C on a related graph with a slope of -2.99 J/m. What would the force be at that point?

### 1 Answer

- Andrew SmithLv 74 months ago
You haven't given sufficient information to answer your first question.

Total energy is conserved so that if potential energy is increasing then kinetic energy must be decreasing.

Correspondingly the speed must be decreasing. You don't know anything about the velocity if you don't specify a direction for everything.

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