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# Slope, Speed, Acc.

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

You know the average speed of a trip. You also have a distance versus time graph of the trip. Which gives you more information about the trip-- the speed or the graph? Explain your answer. | The graph because you can get the average speed, instantaneous speed, distance traveled time, time it took, and times you stopped |

What is the slope of a distance vs. time graph equal to? | Speed |

What is the slope of a speed vs. time graph equal to? | Acceleration |

What's the difference between average speed and instantaneous speed? Explain and give a real-life example. | Average speed: Total distance divided by total time Instantaneous speed: Speed you have at a specific point on the journey On an out-of-state trip, your instantaneous speed is the speed at a particular point in time |

Does the speedometer of a car give you the average speed or the instantaneous speed of the car? Explain. | Instantaneous speed because it only shows the speed at a particular instant in time. It changes from one instant to the next. |

What is the acceleration of a car that is going at a steady speed of 60 mph? | 0 m/hr2 if the car doesn't turn |

Does a car accelerate when it goes around a corner at a steady speed? Explain your answer. | Yes a change in direction is acceleration |

What is the difference between acceleration and speed? | Speed is distance over time. Acceleration is how much your speed changes over time |

What is the difference between speed and velocity? | Velocity tells you the speed and direction. Speed tells you how fast you are going over a certain distance |

Cruise control? | Zero acceleration |

Applying brakes on a truck? | Deceleration |

Dropping a ball from a roof? | Acceleration (due to gravity) |

A motorcycle parked in a parking lot? | Zero acceleration |

A car turning a sharp corner? | Acceleration |

Why do we calculate slope on a distance vs. time graph? | It shows you the amount of distance you cover in a certain amount of time (speed) |

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