A Rock Is Thrown from the Upper Edge of a Tall

question 48

Multiple Choice

A rock is thrown from the upper edge of a tall cliff at some angle above the horizontal.It reaches its highest point and starts falling down.Which of the following statements about the rock's motion are true just before it hits the ground? (There could be more than one correct choice. )

• A)Its horizontal velocity component is zero.
• B)Its velocity is vertical.
• C)Its vertical velocity component is the same as it was just as it was launched.
• D)Its horizontal velocity component is the same as it was just as it was launched.
• E)Its speed is the same as it was just as it was launched.

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Definitions:

Repetitive Tasks

Activities or jobs that involve the same series of actions being performed over and over again, often leading to boredom or physical strain.

Worker Motivation

The level of energy, commitment, and creativity that a company's workers bring to their jobs.

Self-efficacy

Describes an individual's belief in their capacity to execute behaviors necessary to produce specific performance attainments.

Expectation

A belief or anticipation about the way events, behaviors, or processes should unfold.