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Q. An electric motor rotating a workshop grinding wheel at a rate of 81 rev/min is switched off. Suppose the wheel has a steady negative angular acceleration of magnitude 1.90 rad/s2.

Q. A 9.0 bullet is fired into an 8 wood block that is at rest on a wood table. The block, with the bullet embedded, slides 5.0 across the table. The coefficient of kinetic friction for wood sliding on wood is 0.2.

What was the speed of bullet?

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