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# Newton's Laws

### Vocabulary

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

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat? | 100 Newtons in the opposite direction |

What is the sum of all forces acting on an object? | Net Force |

What is a change in position compared to other objects? | Motion |

What law states that for every action, there is an equal and opposite reaction? | Third Law |

What is it called when you strike or hit something with any amount of force? | Collide |

What is another word for collide? | Collision |

According to Newton's Third Law, if someone is riding a wakeboard and then jumps off, the wakeboard will travel in the opposite direction because... | for the force that sent the person forward, there is an equal force pushing back on the wakeboard. |

The nozzle of a toy rocket is pointed down so that as fuel is ignited, the exhaust pushes down. Why is this necessary? | As fuel is combusted, the rocket pushes the gases backward and the gases push the rocket forward. |

For every force there is an equal and opposite reaction between ___. | Interacting objects |

A ___ is the unit of measurement for force. | Newton |

When you are sitting in a chair, your body exerts a ___ on the chair and the chair exerts the ___ force back. | Force; same |

When applying a force to a book on a desk, the force must be greater than the force of ___ in order for the book to move. | Friction |

True | True or False? A rocket launched into space and a balloon accelerating upward are both examples of Newtons Third Law. |

False | True or False? A train moving at a constant speed and a girl circling on a carousel are both examples of Newtons Third Law. |

What is the definition of force? | push or pull |

What do we call the amount of matter in an object? | mass |

What is acceleration? | the rate of change of velocity |

What is velocity? | BOTH speed and direction of an object |

What law is force = mass times acceleration? | Second Law |

What law states an object will stay in motion unless an outside force acts on it? | First Law |

How many Newton laws are there? | Three |

When an object has a net force of zero, it is | balanced |

When an object has a net force greater than zero, it is | unbalanced |