(1)s=0.5*a1*t^2=100m
根据0.5*a*t²=s
T=√(2*100)/(4.5-2)=√80(s)
(2)达到共同速度时,有最大距离
a1(t+10)=a2*t
t=8
s=0.5*a1*(t+10)²-0.5*a2*t²=520(m)
(1)s=0.5*a1*t^2=100m
根据0.5*a*t²=s
T=√(2*100)/(4.5-2)=√80(s)
(2)达到共同速度时,有最大距离
a1(t+10)=a2*t
t=8
s=0.5*a1*(t+10)²-0.5*a2*t²=520(m)