A block is released from rest at point P and slides along the frictionless track shown.At point Q, its speed is: 
Definitions:
Lawn Mowing
The action or process of cutting the grass in a lawn to maintain its appearance and health.
Shut Down
A short-term decision by a firm to cease production due to market conditions, typically because the market price is below the minimum of average variable costs.
Economic Profits
The difference between total revenue and total costs, including both explicit and implicit costs, indicating profitability beyond normal returns.
Long-run
A period of time in which all factors of production and costs are variable, allowing companies to adjust to market changes completely.
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