Use the Picture to the Right to Answer the Next $\alpha$

question 65

Multiple Choice

Use the picture to the right to answer the next question. A puck of m₁ and moving with velocity v₁ collides elastically with a second puck of mass m₂, which is initially at rest. After the collision, m₁ moves with velocity v₁’ at an angle α below the x axis and m₂ moves with velocity v₂’ at an angle θ above the x axis.

-The conservation of momentum along the x direction can be written as

• A)m₁ v₁ = m₁v₁' cos \(\alpha\) + m₂v₂' cos \(\theta\)
• B)0 = m₁v₁' cos \(\alpha\) + m₂v₂' cos \(\theta\)
• C)m₁ v₁ = m₁v₁' sin \(\alpha\) + m₂v₂' sin \(\theta\)
• D)0 = m₁v₁' sin \(\alpha\) + m₂v₂' sin \(\theta\)
• E)none of the above

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Definitions:

Price-Earnings Ratio

A valuation metric comparing a company's current share price to its per-share earnings, indicating investor expectations of growth.

Market Price

The existing cost for purchasing or selling an asset or service.

Net Income

The amount a company earns after deducting every cost, expense, and tax from its total income.

Price-Earnings Ratio

A valuation ratio of a company's current share price compared to its per-share earnings, used to evaluate if a stock is over or undervalued.