Physics

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Across
  1. 3. moving or tending to move toward the center
  2. 5. change in speed, change in direction, or both
Down
  1. 1. moving or tending to move away from the center
  2. 2. a vector quantity that has a direction and magnitude, which is the speed
  3. 4. a straight line that touches a curve or curved surface at a single point