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m=3[t]=3000[kg];
V=216[km/h]/3,6=60[m/s];
g=10[m/s2];
Ec=18[MJ]=18000000[J];
Ec=mgh+(mV2)/2 I 2;
2Ec=2mgh+mV2;
2mgh=2Ec-mV2 II 2mg;
h=(2Ec-mV2)/2mg;
Jednostka:
[h]=[(m2/s2)/(m/s2)]=[m];
Obliczenia:
h=(36000000-3000*3600)/(2*3000*10);
h=(36000000-10800000)/60000;
h=25200000/60000;
h=420[m].