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1. | metric unit of measure for mass |

3. | when objects collide, the sum of their momentums (p) before & after the collision are equal; m1v1=m2v2 |

4. | the ability to do work (to make a mass move) |

5. | an experiment in which tests of a hypothesis are identical except for changes in a single independent variable |

7. | an educated guess which is either supported or not when conclusions are drawn |

9. | metrix prefix showing that 1000 units are present; for example, 1 km = 1000m |

11. | term for negative acceleration |

12. | description of velocity when a distance/time graph is a straight line |

13. | multiplication of force by a simple machine; MA; equals output force divided by input force |

14. | rise over run; (y2-y1)/(x2-x1) |

18. | sum of potential & kinetic energy when there's no friction |

19. | how much matter an object contains; measured in g or kg; constant anywhere in the universe |

20. | equals 746 watts |

23. | watts; the rate at which energy is used; work/time |

24. | equals the mass of object times g; the force gravity exerts on a mass; changes if g changes |

25. | the sum of all forces acting on an object |

27. | acceleration due to gravity; 9.8 m/s/s on earth |

29. | type of stored energy; equals mass times gravity times height; increases with the height of an object |

31. | property of matter increasing with mass & resisting changes in motion |

32. | Newton's law stating that objects remain at rest unless acted on by unbalanced forces |

33. | a push or a pull |

34. | type of graphical relationship showing one value increasing as the other is decreasing |

36. | rotating (balancing) point for a lever |

37. | the variable that changes as a result of the manipulations in the independent variable; usually graphed on the y axis |

39. | Newton's law stating that F=ma |

46. | metric unit of measure for length |

48. | multiple by which kinetic energy increases if speed increases three times |