- Describing motion in one dimension is very easy if a
body has constant velocity.
(x - xo) = v * (t - to)

- It's still not too bad if a body has constant acceleration.
One can derive a set of four equations which connect time and
the body's position, velocity, and acceleration.
(v - vo) = a * (t - to) (x - xo) = (avg v) * (t - to) 1 2 (x - xo) = vo * (t - to) + --- * a * (t - to) 2 2 2 2 * a * (x - xo) = v - vo

- The key to solving problems in kinematics is
**to understand what's going on.**Only if you comprehend the situation will you be able to pick the equation(s) which take the information given and yield the desired result. - Sometimes, the four kinematic equations for constant
acceleration are written under the assumption that
**to = 0**and**xo = 0**; they then take the formv = a * t x = (avg v) * t 1 2 x = vo * t + --- * a * t 2 2 2 2 * a * x = v - vo

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