sin θ ×S=1/2gt².(1)
cos θ×S=Vt.(2)
(1)÷(2)得:
tanθ = gt/(2V)
t = 2V tan θ /g
S = Vt /cosθ = 2V² tan θ /(gcosθ)= 2V² sin θ /(gcos²θ)
sin θ ×S=1/2gt².(1)
cos θ×S=Vt.(2)
(1)÷(2)得:
tanθ = gt/(2V)
t = 2V tan θ /g
S = Vt /cosθ = 2V² tan θ /(gcosθ)= 2V² sin θ /(gcos²θ)