click below

click below

Normal Size Small Size show me how

# Physics for exam

### First Exam

Question | Answer |
---|---|

Change in position over time | Motion |

what you are comparing motion to | Frame of Reference |

states where the zero point is and the direction the value increases | Coordinate System |

same distance traveled each second (faster it goes, steeper the slope) | Constant Speed |

Series of points which represents position over equal intervals of time | Motion Diagram |

the length between 2 points | distance |

magnitude- no direction (ex. distance) | Scalar quantity |

distance and direction | displacement |

Magnitue and direction (ex. displacement) | vector quantity |

At a constant velocity average velocity equals the ___________ ___________ | instantaneous velocity |

Displacement- with constant acceleration | d=1/2(Vf+Vi)t |

maximum speed that a falling object can reach | terminal velocity |

time it takes to go up and go down are the ____ if it is thrown and caught at the same velocity. | same |

an object shot in the air | projectile |

path an object takes | trajectory |

When an object is moving in ______ motion it has a constant velocity | horizontal |

When an object is moving in _______ motion, gravity caues it to accelerate at 9.8m/s/s | Vertical |

Horizontal motion and vertical motion are _____ of each other | independent |

How does the acceleration due to gravity affect the velocity of a falling object? | |

sum of all forces acting on an object | net force |

when fnet=0, no accleration and the object is either at rest or moving t a constant velocity the object it in ________ | equilibrium |

the force that is perpendicular to the surface, magnitude is equal to gravity | normal force |

the force an object expereinces as a result of all the forces acting on it | apparent weight |

a push or pull exerted on an object | force |

Newton's second law | the acceleration of an object is equal to the sum of the forces acting on the object, divided by the mass of the object |

Newton's first law | an object that is at rest will remain at rest, and an object that is moving will continue to move in a straight line with constant speed, if and only if the new force acting on that object is zero. |

the tendency of an object to resist change | inertia |

the force exerted by a fluid on the object moving through the fluid. | drag force |

Newton's Third Law | all forces come in pairs |

a force exerted by a string or rope | tension |