A Block Is Supported on a Compressed Spring, Which Projects

question 71

Multiple Choice

A block is supported on a compressed spring, which projects the block straight up in the air at velocity . The spring and ledge it sits on then retract. You can win a prize by hitting the block with a ball. When should you throw the ball and in what direction to be sure the ball hits the block? (Assume the ball can reach the block before the block reaches the ground and that the ball is thrown from a height equal to the release position of the block.)

• A)At the instant when the block leaves the spring, directed at the block
• B)At the instant when the block leaves the spring, directed at the spring
• C)At the instant when the block is at the highest point, directed at the block
• D)At the instant when the block is at the highest point, directed at the spring
• E)When the block is back at the spring's original position, directed at that position

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Definitions:

Income Earned

The total amount of money received by an individual or entity as a result of employment, investments, or other sources over a certain period.

Capital Stock

The total amount of physical and financial assets owned by a company, including buildings, machinery, and equity investments.

Interest Income

Income earned through the lending of money or from deposit funds in bank accounts and other financial instruments.

Long Span

A term typically referring to an extensive period or duration, often used in the context of construction (for structures with large distances between supports) or careers (lengthy professional life).