Springs, Work and Energy Practice Problem

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Problem Description: A 1.0kg block is attached to a relaxed spring (k = 50 N/m) along a horizontal surface. The block is pulled with a force of 3N until it stops. A) What is the position of the block when it stops? B) What is the work done by the applied force? C) What is the position of the block when it is moving the fastest? D) What is the speed of the block when it is moving the fastest?