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Jakob Littel

Feb 20, 2025

A student slides a 0.75 kg textbook across a table, and it comes to rest after traveling 1.2m.

a student slides a 0.75 kg textbook across a table, and it comes to rest after traveling 1.2m. Given that the coefficient of kinetic friction between the book and the table is 0.34, use the work-kinetic energy theorem to find the book's initial speed.
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Hermina Ferry

Feb 20, 2025

Here frictional force= m*g*coefficient of kinetic friction = 0.75 * 9.8 * 0.34 =2.499 Newton Now, Acceleration of the book = force/mass =2.499/0.75 =3.332and distance=1.2mSo using the formula V*V = u*u + 2as V= 0 m/s, a=3.332 and s=1.2so 0 = u*u +2* (-3.332)*1.2 therefore, u=2.83 m/s... Show More
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