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# Team 1 Science Test

### Motion Unit Test (2/14)

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

TRUE OR FALSE?: Observers need to be in the same frame of reference to determine the motion of an object. Both observers need to agree that a certain point is not moving to compare the moving object to that point. | True |

A stationary point that allows observers to see motion because the distance between the object and stationary reference point changes. | Reference Point |

The distance traveled in a certain amount of time. "How fast" | Speed |

What is the formula for speed? | Distance/time |

What is the formula for distance? | Speed*Time |

What is the formula for time? | Distance/speed |

The speed at a certain instant of time. | Instantaneous speed |

Traveling equal distances in equal amounts of time. | Constant speed |

The total distance traveled in a certain amount of time. | Average speed |

The speed in a certain direction. "How fast and which way" | Velocity |

If Lauren can run 15m in 10sec, what is her speed? | 1.5 m/s |

How one variable changes in relation to another. | Slope |

What is the formula for slope? | (y2-y1)/(x2-x1) |

Covering equal distances in equal amounts of time without changing direction | Constant velocity |

Any change in velocity | Acceleration |

The three ways of __________ are speeding up, slowing down, and changing direction. | Accelerating |

What is the formula for acceleration? | (Final velocity - Initial velocity)/ Time |

What is the unit for acceleration? | m/sec^2 |

A car accelerates from rest to a final speed of 10m/s in 5 sec. What is the acceleration of the car? | 2 m/sec^2 |

A car speeds up from 10 m/s to 20 m/s in 4 sec. What is the acceleration of the car? | 2.5 m/sec^2 |

A car slows down from a speed of 25 m/s to 10 m/s in 3 sec. What is the acceleration of the car? | -5 m/sec^2 |

A car is traveling at 10 m/s. How much times will it take to accelerate to a final speed of 30 m/s if it can accelerate eat 4 m/sec^2? | 5 sec |

A car that is at rest begins to accelerate at 5 m/sec^2. What is the car's speed after 6 seconds? | 30 m/s |

A car that is traveling at 10 m/s begins to accelerate at 5 m/sec^2. What is the car's speed after 6 seconds? | 40 m/s |

A car accelerates from rest at 4 m/sec^2. Calculate the distance traveled and final velocity after 3 seconds. | Distance: 18m Velocity: 12 m/s |

If a distance vs time graph has a flat slope (horizontal line), then the object that is being graphed is ___ ______. | Not moving |

If a distance vs time graph has a slanted slope, then the object that is being graphed is moving at a ________ _____. | Constant speed |

If a distance vs time graph has a curved slope, then the object that is being graphed is ____________. | Accelerating |

If a velocity vs time graph has a flat slope (horizontal line), then the object that is being graphed is moving at a _______ _____. | Constant speed |

If a velocity vs time graph has a slanted slope, then the object that is being graphed is _____________. | Accelerating |

If an acceleration vs time graph has a slanted slope, then the object that is being graphed is moving at a _______ ____________. | Constant acceleration |