p₁ = m₁·v₁
p₂ = m₁·v₂ + m₂·u
m₁·v₂ + m₂·u = m₁·v₁
u = m₁·v₁ - m₁·v₂ = m₁·(v₁-v₂) = m₁·(20-10) = 10·m₁
m₁·v₁²/2 = m₁·v₂²/2 + m₂·u²/2
m₁·v₁² = m₁·v₂² + m₂·100·m₁²
v₁² = v₂² + 100·m₂·m₁
400 = 100 + 100·m₂·m₁
3 = m₂·m₁
m₂ = /m₁
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Answers & Comments
p₁ = m₁·v₁
p₂ = m₁·v₂ + m₂·u
m₁·v₂ + m₂·u = m₁·v₁
u = m₁·v₁ - m₁·v₂ = m₁·(v₁-v₂) = m₁·(20-10) = 10·m₁
m₁·v₁²/2 = m₁·v₂²/2 + m₂·u²/2
m₁·v₁² = m₁·v₂² + m₂·100·m₁²
v₁² = v₂² + 100·m₂·m₁
400 = 100 + 100·m₂·m₁
3 = m₂·m₁
m₂ = /m₁