1.((72+108)/10-(72+108)/15)/(1.4-1)=15(m/s)
2.1275/((100+70)/2)* ((100-70)/2)=225(m)
1275/((100+70)/2)=15(m/s)
15*3600/1000=54(km/h)
1.((72+108)/10-(72+108)/15)/(1.4-1)=15(m/s)
2.1275/((100+70)/2)* ((100-70)/2)=225(m)
1275/((100+70)/2)=15(m/s)
15*3600/1000=54(km/h)