Energy Transferred Across The System Boundary Worksheet

Name: __________________

Energy Transferred Across the System Boundary

Use Energy Pie Charts to describe the system. Include all objects and interactions in

your System Schema.

1) A train is at rest. Superman pushes the train, starting at rest, giving the train a

constant acceleration. Consider the situation during the time that Superman is

pushing the train only.

(a) Make energy pie charts for this situation when everything is in your system

(b) Make energy pie charts for this situation when the train is the only object in

your system

2) Now a train is speeding down a track with a constant velocity. Superman gets in

front of the train and slows the train to a stop. Consider this situation from the

time Superman starts slowing the train down until the train comes to a stop. Make

the train the only object in your system.

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