" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
p=30kg*m/s
p=m*v
ek=mv2/2
ek=p*v/2
180=30*v/2
v=12m/s
30=12*m
m=2,5 kg
mam nadzieje, że dobrze