http://capa2.phy.ohiou.edu/adm/randomlabel.png?token=1446505969_14824_1 A block

Question

http://capa2.phy.ohiou.edu/adm/randomlabel.png?token=1446505969_14824_1

A block rests on a horizontal, frictionless table. It is attached to a spring and set into motion. The picture above shows snapshots of the block at 5 different labelled locations during the motion. The two extreme locations (Points B and C) represent the two extremes of the motion of the block. Point E represents the equilibrium position. Evaluate each statement below.
The kinetic energy of the block at location C is ____. zero,positive, or negative?
The kinetic energy of the block at location E is ____.
The kinetic energy of the block at location D is ____.
The potential energy of the spring at location E is ____.
The potential energy of the spring at location A is ____.

Explanation / Answer

The kinetic energy of the block at location C is zero
The kinetic energy of the block at location E is positive
The kinetic energy of the block at location D is zero
The potential energy of the spring at location E is zero
The potential energy of the spring at location A is positive

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