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Across 5. speed of an object moves in an particular direction 6. the resulting opposite and equal force 8. the amount or quantity of heaviness or mass 11. friction between gas/ air 12. force that oposes motion between 2 surface that are touching 14. an object mass multiplied by its velocity = 15. force pulling on an object toward center of another object

Down 1. momentum can be transformed from 1 object to another but cannot chage in total amount 2. rate at which velocity changes 3. force required to accelerate a mass of one kilogram one meter per second per second 4. movement 7. how fast an object moves in a spicific derection 9. fricton between a liquid solid or a gas 10. is a push or a pull 13. the property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force.