s2=2s1,则2s1-s1=8
s1=8,s2=16m
如果两段时间内位移相连,则s1:s2=1:3
而s1:s2=1:2>1:3,所以两段有重合.
s1=at^2/2得a=1m/s^2
设总时间为T
aT^2/2-a(T-4)^2/2=16
T=6s
s2=2s1,则2s1-s1=8
s1=8,s2=16m
如果两段时间内位移相连,则s1:s2=1:3
而s1:s2=1:2>1:3,所以两段有重合.
s1=at^2/2得a=1m/s^2
设总时间为T
aT^2/2-a(T-4)^2/2=16
T=6s