Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revisionLast revisionBoth sides next revision | ||
| 183_notes:examples:sliding_to_a_stop [2014/09/22 04:35] – pwirving | 183_notes:examples:sliding_to_a_stop [2014/09/22 04:39] – pwirving | ||
|---|---|---|---|
| Line 70: | Line 70: | ||
| $ \Delta(t) = \dfrac{6 m/s}{0.4 (9.8 N/kg)} = 1.53s $ | $ \Delta(t) = \dfrac{6 m/s}{0.4 (9.8 N/kg)} = 1.53s $ | ||
| - | Since the net force was constant, $v_{x,avg} = (v_{xi} + v_{xf})/2$, so | + | Since the net force was constant |
| $ \Delta x/\Delta t = ((6 + 0)/2) m/s = 3m/s $ | $ \Delta x/\Delta t = ((6 + 0)/2) m/s = 3m/s $ | ||
| + | |||
| + | Sub in for $\Delta t$ and solve for $\Delta x$ | ||
| $ \Delta x = (3 m/s)(1.53 s) = 4.5m $ | $ \Delta x = (3 m/s)(1.53 s) = 4.5m $ | ||