设到C的速度为v0
从B到C有:v0t1-1/2gt1^2=H1
从B1到C有:v0t2-1/2gt2^2=H2
得到
v0 = h1/t1 + 1/2 gt1 = h2/t2 + 1/2 gt2
g(t1-t2) = 2(h2/t2-h1/t1)
g= 2 (h2/t2-h1/t1)/(t1-t2)
设到C的速度为v0
从B到C有:v0t1-1/2gt1^2=H1
从B1到C有:v0t2-1/2gt2^2=H2
得到
v0 = h1/t1 + 1/2 gt1 = h2/t2 + 1/2 gt2
g(t1-t2) = 2(h2/t2-h1/t1)
g= 2 (h2/t2-h1/t1)/(t1-t2)