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User:CeryM11

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Hello there, I'm a pupil of the Gisela Gym, munich I study physics with mr Oswald as my teacher. I'm 16 years old and like drawing and dancing. Hope you'll be nice to me ;-)

1.9 Rückwärtsgang

a)v=\frac {\Delta {x}} {\Delta {t}} 

 v=\frac {-168m} {12,5s}
 v=-13.4\frac {m} {s}

b)x(t) = x0 + v * Δt 

 x(t)=168m-13.4\frac {m} {s} * 173s
x(t)=2.16\frac {km} {h}

c)t=\frac {x(t)-x_0} {v} 

\frac {-6200m-168m} {-13.4\frac {m} {s}}
 = 473.8s

4.1: Brummi, Teil 2

c) W_a =\frac {m} {2}* v^2 

 17500kg * (13.89\frac {m} {s})^2 =3.4MJ

d1) P=\frac {W} {t} 

  \frac {3375750J} {40s}=84393.75W=84.4kW

d2) P=\frac {W_a +W_R} {t} 

  341.9kW

d3)WR = FR * x = 

  10.3MJ


4.6: Energievergleich

a) E_Kin=\frac {1} {2}m*v^2 

   \frac {1} {2}*2000kg*13.9\frac {m} {s}=
  
  193kJ

b) EPot = m * g * h 

  1.9MJ

c) E_Kin =\frac {1} {2}*m*v^2 

  2MJ


4.13: Bilderbuchstart

a)F = m * g = 

 1.77MN

b)p = m * v 

 890kg*5000\frac {m} {s}=
 
 4450000

 F=\frac {p} {\Delta {t}}=
 4.45MN

c)a=\frac{F_S - F_G} {m} 

 \frac {(4.45-1.77)MN} {180000kg}=

 15\frac {m} {s}
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