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# Ch. 10 - Test

### Science: Motion & Momentum

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

If you are driving up a curvy mountain road, would your displacement be greater than or less than your distance? | Less than |

Motion is a change in | position |

Does a line on a speed-time graph with a steep slope indicate a greater or a lesser speed? | greater |

As a moving object's velocity decreases, its momentum | decreases |

If two objects collided, what effect does that have on their momentum? | When things hit each other it transfers |

To have ______________ an object must be moving. | momentum |

Speed is the rate of change in | distance |

To describe velocity, what two things do you need to know? | speed & direction |

Acceleration is a change in | velocity |

On a speed-time graph, a __________ line shows the change in speed zero. | straight |

If you exert a force on an object in motion, you will change its | direction |

What is the formula for calculating speed? | S = D/T |

When object 'A' collides with object 'B' and bounces back, how does its final momentum compare to its starting momentum? | same |

What is momentum a measure of? | How hard it is to stop an object |

A cue ball hits another billiard ball and slows down. Why does the speed of the cue ball decrease? | it transfers momentum to the other ball |

What kind of speed is measured at a particular moment or instant in time? | instantaneous speed |

How can the displacement of an object be zero when the distance traveled was 1 mile? | You could travel 0.5 miles and 0.5 back |

List three ways to accelerate an object. | speed up, slow down, changing direction |

Be able to compare the slope of a line on an acceleration graph and determine faster and slower rates of acceleration. | |

Be able to calculate the speed of an object using information gotten from a graph. | |

Describe what will happen when a small ball moving in one direction strikes a large ball that is sitting still. What happens to the small ball? | it will bounce back |

Describe what will happen when a small ball moving in one direction strikes a large ball that is sitting still. What happens to the large ball? | it will move the direction of the small ball |

Review your math worksheet from S=D/T . There will be 4 to 5 problems on the test that are similar to theses problems. You will need to show your work, solve the problem, and have the right label. | |

A marathon runner can run 25 miles in 5 hours. What speed is she running? | |

On the European Autobahn, cars can drive up to 140 kph. How far can one of those cars get in 6 hours? | |

If an airplane travels at 400 miles per hour, how long would it take to travel 3600 miles? | |

Draw a speed-time graph that shows an increase in speed; one for a decrease in speed; and one for no change in speed. |

Created by:
clj.ss.7