F = m*a
v² - v₀² = 2*a*S => a = v² / (2*S), v₀ = 0
F = m*v² / (2*S) = 7 кг * (13 м/с)² / (2 * 2,9 м) ≈ 2,0*10² Н = 200 Н
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F = m*a
v² - v₀² = 2*a*S => a = v² / (2*S), v₀ = 0
F = m*v² / (2*S) = 7 кг * (13 м/с)² / (2 * 2,9 м) ≈ 2,0*10² Н = 200 Н