🎉 Announcing Numerade's $26M Series A, led by IDG Capital!Read how Numerade will revolutionize STEM Learning Numerade Educator ### Problem 75 Easy Difficulty # A rife bullet with mass 8.00$\mathrm{g}$strikes and embeds itself in a block with mass 0.992 kg that rests on a frictionless, horizontal surface and is attached to a coil spring (Fig. 8.43$)$. The impact compresses the spring 15.0$\mathrm{cm}$. Calibration of the spring shows that a force of 0.750$\mathrm{N}$is required to compress the spring 0.250$\mathrm{cm} .(\mathrm{a})$Find the magnitude of the block's velocity just after impact. (b) What was the initial speed of the bullet? ### Answer ## (a)$v_{2}=2.60 \mathrm{m} / \mathrm{s}$(b)$v_{A 1}=325 \mathrm{m} / \mathrm{s}\$

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Moment, Impulse, and Collisions

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University of Michigan - Ann Arbor

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University of Washington

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University of Sheffield

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#### Topics

Moment, Impulse, and Collisions

##### Andy C.

University of Michigan - Ann Arbor

##### Marshall S.

University of Washington

##### Aspen F.

University of Sheffield

Lectures

Join Bootcamp