acceleration - changing motion, straight lines - indicate no change in speed, curvy lines - indicate changing speeds, constant - same, steady, What is the speed? - How fast is it going?, steep, high lines - Indicate fast or rapid motion, shallow, low lines - indicate slow motion, origin - the zero point. The beginning, start, away - heading up, leaving the origin, toward - going TO someplace or someone- In the direction closer to something., speed up! Speed up! - Faster, Faster!, Slow down. - Reduce or decrease your speed., increase - get bigger, faster. (more), decrease - go down, get smaller (less), predictions - an intelligent guess or hypothesis about what will happen in an experiment, persist - Don't give up,

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