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Across 5. the action or process of moving or of changing place or position 8. speed at a particular instant in time 12. a change in velocity. 15. to decrease the velocity of 16. the total distance traveled divided by the total time elapsed. 17. a graph with a constant speed 18. size

Down 1. written down 2. an object that has a velocity that keeps changing constantly 3. a graph without a constant speed 4. fall of a body such that the only force acting upon it is that of gravity. 6. amount of space between two things 7. amount or degree to which something is displaced. 9. to direct at a slant or inclination 10. a quantity possessing both magnitude and direction 11. the time rate of change of position of a body in a specified direction. 13. relative rapidity in moving, going 14. degree of speed