Mechanics11/Seite5/Loesung2.7

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2.7 a:

[math]\Delta t [/math] = 3,87 s

[math]\Delta v [/math]= 100 km/h = 27,78[math]\frac{m}{s}[/math]

a =[math]\frac{27,78 m/s}{3,87s}[/math]= 7,18 [math]\frac{m}{s2}[/math]

2.7 b:

x(t) = [math]\frac{1}{2}[/math] * a * t2

= [math]\frac{1}{2}[/math] * 7,18[math]\frac{m}{s2}[/math] * 3,87s2 = 53,77 m = 54 m


--Marc 20:31, 6 November 2007 (CET)