User:Platon m11

Hello my name ist Mehdi .I'm in the 11th grade at the GiselaGymnasium in Munich. This acc is a projekt during our Physics class. Search for more at Mechanics11 []

=sandbox= Hausaufgabe:

$$ x_1(t) = 153mkh^{-1}* t$$

$$ x_2(t) = 14km+95kmh^{-1}* t$$

$$153kmh^{-1}* t = 14km+95kmh^{-1}* t$$

$$58kmh^{-1}* t = 14km$$

$$t = 0.24h$$

=2.6 Anfahren=

$$a_{Zug} = 0.850 \frac {m}{s^2}$$

$$V_{Zug} = 75,0 \frac {km}{h}$$

$$V_{Zug} = a * t$$

$$t=\frac{v}{a}$$=$$\frac{75\frac{km}{h}}{0,85\frac{m}{s}}24,5s$$

=4.6=

a) $$ E_k = \frac {1}{2}* v^2 $$

$$\frac {1}{2}*2000*(50/3.6) = 192901$$

b) $$ E_b = m*g*h= 1000*9,81*200 = 1962000J $$

c) $$\frac{1}{2} 4000000* 1 = 2MJ$$

4.7
a) E=$$\frac {1}{2}$$mv2 $$\frac {1}{2}$$ $$*$$ 2000kg$$*$$50$$\frac {km}{h}$$=193kJ

b) E=mgh 1000kg$$*$$9.61$$\frac {n}{kg}$$$$*$$200m=1,96MJ

c) E=$$\frac {1}{2}$$mv2 $$\frac {1}{2}$$$$*$$4000t$$*$$1$$\frac {m}{s}$$=2MJ