设物体初速度为v,加速度为a,则
s1=vT+aT^2/2;
s2=v(2T)+a(2T)^2/2-s1=vT+3aT^2/2
依次类推,
s3=vT+5aT^2/2
.
sn=vT+(2n-1)aT^2/2
所以Δs＝s2-s1=s3-s2=.=aT^2