Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Physics test 1

### Test Date: 9/29/2015

Term | Definition |
---|---|

Gravity | The force that attracts one object towards the center of the earth, or any other object of mass |

Acceleration | Acceleration is the rate at which velocity is changing with respect to time |

Acceleration FORMULA | speed/time or distance/time/time or ΔV/time |

Velocity | Velocity is speed together with time Velocity is only constant when speed and direction are BOTH constant |

Velocity FORMULA | Distance/time in a direction |

Speed | Speed is a measure of how fast something is moving. |

Speed FORMULA | Distance/time |

What did we learn from the 1st car ramp experiment? | The steeper the angle of the car's ramp, the faster the car travels because gravity is helping more as the ramp gets steeper |

What did we learn from the 1st marble drop experiment? | As the measured distance of the fall increases, the speed at PB increases, showing proof of acceleration |

What did we learn from the 2nd marble drop experiment? | TBD |

What did we do in the 1st car ramp experiment? | Each group was assigned a height to place one end of the ramp at, and then we found the average speed at each height, and then shared with the class |

What did we do in the 1st marble drop experiment? | We found the times from PA to PB, at PA and at PB as well as the speed at PA and PB with a measured fall distance of 5-75 cm in 5 cm increments. We then graphed and analyzed the data. Also, we learned how to predict speed based on time |

What did we do in the 2nd marble drop experiment? | TBD |

Displacement | Displacement is how much an object has moved from its original position "How far out of place an object is" |

Distance | Distance is how much ground an object has covered, or how far it moved (mm, cm, m, km) (in, ft, yrd, mi) |

Time | How long something took to happen. (multiples/divisions of sec, minute, hour) |

Variables | A variable is any trait, factor, or condition that can exist in differing amounts or types |

Define: - Mean - Median - Mode - Range | - Add up all numbers, and divide by the number of numbers - The number in the middle of the organized list lowest to highest - The number that appears most often - The smallest value subtracted by the largest value |

Hypothesis | A supposed explanation or answer to a question that prompts further investigation or experimentation, and is the start of a lab |

The two types of graphs; name | SPEED VS TIME DISTANCE VS TIME |

Percent difference/ percent change | Percent increase and percent decrease are measures of percent change, which is the extent to which a variable gains or loses intensity, magnitude, extent, or value. |

How to find percent difference | % = (difference of the values) / (average of the values) x 100 |

Instantaneous speed | Instantaneous speed is the speed of an object at any instant |

Average speed | Average speed is the total distance covered, divided by the time interval |

Independent Variable | The variable that changes or is changed in the experiment There can only be one per experiment |

Dependent Variable | The variable that is affected by the independent variable Your data |

Constant Variable | The variable(s) that stays the same throughout the experiment |

what did we learn in the 2nd car ramp experiment? | The more weights put on the car, the faster the car's time from PA to PB |

what did we do in the 2nd car ramp experiment? | Our group tested the car's travel time from PA to PB with 0, 1, 2, or 3 200g weights on the car |

Created by:
egbednar