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# Momentum & Collisions (rifle bullet)

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A rifle bullet with mass 8.00 g strikes and embeds itself in a block with mass 0.992 kg that rests on a friction-less horizontal surface and is attached to a coil spring. The impact compresses the spring 15.0 cm. Calibration of the spring shows that a force of 0.750 N is requires to compress the spring 0.250 cm.

1. Find the magnitude of the block's velocity just after impact.
2. What was the initial speed of the bullet?

https://brainmass.com/physics/energy/momentum-collisions-rifle-bullet-70681

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A rifle bullet with mass 8.00 g strikes and embeds itself in a block with mass 0.992 kg that rests on a frictionless, horizontal surface and is attached to a coil spring. The impact ...

#### Solution Summary

This solution calculates the velocity and speed of a bullet.

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