Mechanics11/Seite4/Loesung1.9

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Lehrerlösung

a) [math]\Delta x[/math] = 0 - 168 m = - 168 m
[math]\Delta t[/math] = 12,5 s
⇒ v = - 13,4 m/s = - 48,3 km/h

b) x1 = x0 + v⋅t1
= 168 m + ( - 13,4 m/s)⋅173 s
= - 2,16 km

c) [math]t_2 = \frac{x_2 - x_0}{v}[/math] [math]= \frac{- 6,2 km - 168 m}{- 13,4 m/s}[/math] = 7 min 54 s