User:Alecm11

Hello, I`m a student at the Gisela-Gymnasium, Munich. I was born 1992 in Pegnitz.

= x(t)=x(0)+v*t = x=23cm = t=0.2s = v=50 cm/s

2.7 a=v/t a=(100km/h) : 3,87s a=7,1m/s²

2.8 a=v/t v=at v=0.5m/s²*20s v=10m/s

3.20 a)x=a/2*t² a=v/t

 t2=2x/a    t2=v2/a2
 2x/a=v2/a2
 a=v2/2x
 a=(50km/h)2/2*200m
 a=0,48m/s2

b)F_n=F_g*cosA

 Fn=342kN

 Fr=Fn*µ
 Fr=51kN
 
 Fh=Fg*sinA
 Fh=34kN

 Fa=m*a
 Fa=17kN

 Fmot=Fr+Fh+Fa
 Fmot=102kN