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A srping lies along the x-axis attached ...

A srping lies along the x-axis attached to a wall at one end and a block at the other end. The block rests on a friction less surface at `x=0`. A force of constant magnitude F is applied to the block that begins to compress the spring, until the block comes to a maximum displacement `x_(max)`.

During the displacement, which of the curves shown in the graph best represents the kinetic energy of the block?

A

1

B

2

C

3

D

4

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