ketika bola mencapai tanah kembali y=0
y = Vo.sin 60.t - 1/2.g.t²
0 = Vo.1/2.√3.t - 1/2.10.t²
5t = Vo.1/2.√3.
t = Vo√3/10
x = Vo.cos 60. t
20√3 = Vo. 1/2. Vo√3/10
Vo² = 400
Vo = 20 m/s
kecepatan awal tendangan bola 20 m/s.
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ketika bola mencapai tanah kembali y=0
y = Vo.sin 60.t - 1/2.g.t²
0 = Vo.1/2.√3.t - 1/2.10.t²
5t = Vo.1/2.√3.
t = Vo√3/10
x = Vo.cos 60. t
20√3 = Vo. 1/2. Vo√3/10
Vo² = 400
Vo = 20 m/s
kecepatan awal tendangan bola 20 m/s.