S = (v₀ + v) * t / 2
v = 3v₀ (условия)
S = (v₀ + 3v₀) * t / 2
S = 4v₀ * t / 2 ⇒ v₀ = S / 2t = 20 / 2 * 2 = 20 / 4 = 5 м / с
S=(v^2-v0^2)/2a;
V=3v0;
S=(9v0^2_v0^2)/2a;
V=v0+at;
3v0=v0+at;
2v0=at;
a=2v0/t;
S=(8v0^2)*t/2*2*v0;
S=2v0t;
Vo=s/2t=20/2*2=5м/с.
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Answers & Comments
S = (v₀ + v) * t / 2
v = 3v₀ (условия)
S = (v₀ + 3v₀) * t / 2
S = 4v₀ * t / 2 ⇒ v₀ = S / 2t = 20 / 2 * 2 = 20 / 4 = 5 м / с
S=(v^2-v0^2)/2a;
V=3v0;
S=(9v0^2_v0^2)/2a;
V=v0+at;
3v0=v0+at;
2v0=at;
a=2v0/t;
S=(8v0^2)*t/2*2*v0;
S=2v0t;
Vo=s/2t=20/2*2=5м/с.