Mechanics11/Seite5/Loesung2.7

2.7 a:

$$\Delta t $$ = 3,87 s

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

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

2.7 b:

x(t) = $$\frac{1}{2}$$ * a * t2

= $$\frac{1}{2}$$ * 7,18$$\frac{m}{s2}$$ * 3,87s2 = 53,77 m = 54 m

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