Answers to:

YET ANOTHER DYNAMICS REVIEW

number |
answer |

1 |
T |

2 |
F |

3 |
F |

4 |
T |

5 |
F |

6 |
T |

7 |
T |

8 |
T |

9 |
F (confusing wording: this answer assumes that two people together push with the same force as the single person did) |

10 |
T |

11 |
four |

12 |
inertia |

13 |
first |

14 |
net force, object’s mass |

15 |
force of gravity, tension, equal |

16 |
road, equal and opposite |

17 |
net |

18 |
zero |

19 |
inertia is the tendency for an object to stay at rest or to continue travelling at a uniform velocity |

20 |
when stopping a car, your head tends to move forward |

21 |
a wagon accelerates forward when you apply an unbalanced force [forward] |

22 |
when you push against a wall, the wall provides and equal and opposite force towards you |

23 |
normal force, force of gravity, applied force, force of friction |

24 |
(a) frictional force is 3.1 N [backwards] (b) Acceleration is 1.5 m/s2 [forward] |

25 |
puck will slide for 0.49 seconds |