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# Laws of Motion

### Newton's Laws of Motion

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

Newton's First Law of Motion Law of Inertia | An object at rest stays at rest and an object in motion stays in motion unless acted on by an unbalanced force. |

Newton's Second Law of Motion Law of Acceleration | The force of an object is equal to the mass times the acceleration. |

Newton's Third Law of Motion Law of Action and Reaction | For every action there is an equal and opposite reaction. |

An automobile stops, but your body keeps going. Which law? | First law of motion. |

A skater pushes another skater forward, but the one pushing goes backward. Which law? | Third law of motion. |

A bowling ball with a mass of 4 kg accelerates down the lane at a rate faster than a 6 kg ball. Which law? | Second law of motion. |

The force of the gas expansion and explosion pushes a rocket into the sky. Which law? | Third law of motion. |

You exit a boat. The boat moves backward as you move forward. Which law? | Third law of motion. |

A skater applies a force and begins skating. Once skating, she'll glide on the ice unless there is unbalanced force. Which law? | First law of motion. |

A softball player applies a large force to a ball, accelerating it at a high speed. If the ball was smaller, less force would be needed. Which law? | Second law of motion. |

Find the force of a 20 kg object that accelerates at 2 m/s/s. F = M x A | 40 N |

Find the mass of an object that accelerates at 6 m/s/s at a force of 36 N. M= F/A | 6 kg |

Find the force of an object that has a mass of 400 kg and accelerates at 3 m/s/s. F = M x A | 1200 N |

Two bumper cars collide. They have the same mass and the same speed. Use Newton's third law to explain what will happen. | They will bounce backwards from each other at an equal and opposite force. |

Created by:
cook2sm