" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
72km/h=72000m/3600s=720m/36s=20m/s
Ek=10000*20*20/2=2000000 J
m = 1000 kg
v=72 km/h= 20m/s
Ek= ¹/₂ mv ²
Ek= ¹/₂ × 1000 × 20 = 20000 J
[ kg × (m/s)² = kg × m² ÷ s² = N × m = J]
odp. energia kinetyczna w obydwu przypadkach wynosi 20000 J.