נתון:m=1kgv=30m/sתרגיל:Eh=Ekw*h=0.5mv²10mh=0.5mv²10h=0.5v²20h=30²20h=9002h=90h=45m
תרגיל:Eh=Ekw*h=0.5mv²10mh=0.5mv²10h=0.5v²20h=30²20h=9002h=90h=45m