Ball a Is Dropped from Rest from a Window

question 71

Multiple Choice

Ball A is dropped from rest from a window. At the same instant, ball B is thrown downward; and ball C is thrown upward from the same window. Which statement concerning the balls after their release is necessarily true if air resistance is neglected?

• A)At some instant after it is thrown, the acceleration of ball C is zero.
• B)All three balls strike the ground at the same time.
• C)All three balls have the same velocity at any instant.
• D)All three balls have the same acceleration at any instant.
• E)All three balls reach the ground with the same velocity.

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Definitions:

Summative Evaluations

Comprehensive assessments conducted at the end of a project, program, or educational course to measure its overall effectiveness or outcomes.

Kirkpatrick's General Model

A widely used framework for evaluating training programs, categorizing the outcomes into four levels: reaction, learning, behavior, and results.

Return on Investment

A financial metric used to assess the profitability or efficiency of an investment, calculated by dividing the benefit (return) of an investment by the cost of the investment.

Training Evaluation Processes

Methods used to assess the effectiveness and efficiency of training programs.