A rifle bullet with mass 8.00 gg strikes and embeds itself in a block with mass 0.992 kgkg that rests on a frictionless, horizontal surface and is attached to an ideal spring. The impact compresses the spring 15.0 cmcm. Calibration of the spring shows that a force of 0.750 NN is required to compress the spring 0.250 cmcm. (Figure 1) 1) Find the magnitude of the block's velocity just after impact. 2) What was the initial speed of the bullet?

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