dane:
Ek = 500 J = 500 kg*m2/s2
v =36 km/h =36 *1000m/3600s =10m/s
szukane:
m = ?
Ek = mv^2/2 I*2
mv^2 = 2Ek I:v^2
m = 2Ek/v^2
m = 500kg *m2/s2/(10m/s)^2 = 500/100 kg
m = 5 kg
========
Odp.Szukana masa ciała to 5 kg.
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dane:
Ek = 500 J = 500 kg*m2/s2
v =36 km/h =36 *1000m/3600s =10m/s
szukane:
m = ?
Ek = mv^2/2 I*2
mv^2 = 2Ek I:v^2
m = 2Ek/v^2
m = 500kg *m2/s2/(10m/s)^2 = 500/100 kg
m = 5 kg
========
Odp.Szukana masa ciała to 5 kg.