urp:physgen

This shows you the differences between two versions of the page.

Both sides previous revision Previous revision Next revision | Previous revision | ||

urp:physgen [2021-11-11] nerf_herder |
urp:physgen [2022-02-01] nerf_herder [Newton's 3 laws] |
||
---|---|---|---|

Line 7: | Line 7: | ||

Basic definitions: | Basic definitions: | ||

- | * Force is in newtons or pounds. One newton = 1kg * m / s² (the force needed to accelerate 1kg at 1 m/s²) | + | * **Force** is in newtons or pounds. One newton = 1kg * m / s² (the force needed to accelerate 1kg at 1 m/s²) |

* f = ma | * f = ma | ||

- | * Momentum is p | + | * **Momentum** is p |

* p = mv | * p = mv | ||

- | * energy = work (joules) = force * distance | + | * **energy or work** (joules) = force * distance |

* J = F*d = applying 1 newton for 1 meter (units of kg * m²/s²) | * J = F*d = applying 1 newton for 1 meter (units of kg * m²/s²) | ||

* F = J/d | * F = J/d | ||

- | * power = work/time (joules/sec or watts) | + | * Work is positive if it is applied in the same direction as movement |

+ | * No (net) work is done moving an object horizontally some set distance (unless you overcome friction) - it does not gain or lose potential energy, or have increased kinetic energy at the conclusion | ||

+ | * **power** = work/time (joules/sec or watts) | ||

Fnet = Δp / Δt (since p = mv and Δv/Δtime = acceleration) | Fnet = Δp / Δt (since p = mv and Δv/Δtime = acceleration) | ||

Line 146: | Line 148: | ||

DV = dependent variable - the variable measured (changes because of the experiment) y axis | DV = dependent variable - the variable measured (changes because of the experiment) y axis | ||

+ | FBD = free body diagram - a drawing of mass and all the forces that are applied to it. | ||

Back to the [[physics]] page or the [[00_start|start]] page. | Back to the [[physics]] page or the [[00_start|start]] page. |

urp/physgen.txt · Last modified: 2022-02-01 by nerf_herder