A Block of Ice Slides Freely [No Air Resistance, No

question 79

Multiple Choice

A block of ice slides freely [no air resistance, no friction] down a slippery slope. The block starts from rest at the top of the slope, where it has a vertical height of 4 m above the bottom of the slope and where it has a gravitational energy of 1000 J. The block's total energy a quarter of the way down the slope [at a height of 3 m] is

• A) 250 J.
• B) 500 J.
• C) 750 J.
• D) 1000 J.
• E) greater than 1000 J.

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Definitions:

Immediate Predecessor

In project management, refers to an activity that must be completed directly before another specific activity can commence.

Network Paths

Sequences of connected nodes and links in a network diagram, representing possible routes through a project schedule or communication framework.

Critical Path

The longest sequence of activities in a project plan that must be completed on time for the project to complete on due date.

Immediate Predecessors

The activities or tasks that directly precede another in a project schedule or process, without any intervening tasks.