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A rifle bullet with mass 8.00 g strikes and embeds itself in a block with a...

A rifle bullet with mass 8.00 g strikes and embeds itself in a block with a mass of 0.992 kg that rests on a frictionless, horizontal surface and is attached to a coil spring. (See (Figure 1).) The impact compresses the spring 15.0 cm . Calibration of the spring shows that a force of 0.650 N is required to compress the spring 0.200 cm .

Find the magnitude of the block's velocity just after impact (m/s)

What was the initial speed of the bullet (m/s)
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