# physics

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A 3.0 kg sphere moving to the right at 2.0m/s undergoes an elastic head-on collision with a 2.0kg sphere. The 2.0kg sphere is initially at rest. What is the speed of each sphere after the collision?

• physics -

v₁= (m₁-m₂)v₁₀/(m₁+m₂)
v₂=2m₁v₁₀ /(m₁+m₂)

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