Differences

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

--- urp:physgen [2021-11-11]
nerf_herder
+++ urp:physgen [2022-02-01] (current)
nerf_herder [Newton's 3 laws]
@@ Line 7: / Line 7: @@
 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
-  * Momentum is p
+  * **Momentum** is p
     * 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)
     * 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)
@@ Line 146: / Line 148: @@
 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.
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