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72km/h=20m/s
p=800*20=16000kg*m/s
m- masa
v- prędkośc ciała
72km/h= 20 m/s
P= m*v
P= 800kg * 20m/s= 16000kg m/s
m = 800 kg
v = 72 km/h = 72 1000m/3600s = 20 m/s
szukane:
p = mv
p = 800 kg * 20 m/s = 16000 kg*m/s