Vectors, 2-D motion, Newton's First Law

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Across
  1. 2. thirty degrees north of east is also ________ east of north
  2. 3. In two dimensions, what measurement indicates the direction of a vector?
  3. 5. inertia is an object's _________ to change in motion
  4. 9. According to Newton's First Law of motion, an object does not __________ unless an unbalanced force is acting on it
  5. 10. Objects at rest remain at ________ unless an unbalanced force acts on them
  6. 11. Newton's First Law of Motion is also called the Law of _________
  7. 13. a quantity that has both magnitude and direction
  8. 14. push or pull
  9. 15. the century in which Newton died
  10. 16. An object moving on a frictionless surface without any applied forces acting on it will continue moving forever at constant _________
  11. 17. An object is moving at constant speed in a circular path. Is an unbalanced force acting on the object?
  12. 18. Objects are ____________; they only care about the forces acting on them in the present moment.
Down
  1. 1. In order for an object to slow down, an ____________ force must act on it
  2. 2. the century in which Newton was born
  3. 4. In vector addition, two vectors are added to obtain a ___________ vector
  4. 6. Objects in motion continue at constant speed in a ___________ unless an unbalanced force acts on them
  5. 7. If an unbalanced force is acting on an object, then there is a non-zero _________
  6. 8. If forces are balanced, the net force is _______
  7. 11. Newton's first name
  8. 12. In vector resolution, a vector is broken down into its _____________ vectors
  9. 18. An object's inertia depends on its _________