Motion In Two Dimensions question bank (Physics)

A wheel has a speed of 1200 revolutions per minute and is made to slow down at a rate of $4 \mathrm{rad} / \mathrm{s}^{2}$. The number of revolutions it makes before coming to rest is

A particle of mass $10 \mathrm{~g}$ moves along a circle of radius $6.4 \mathrm{~cm}$ with a constant tangential acceleration. If the kinetic energy of the particle becomes $8 \times 10^{-4} \mathrm{~J}$ by the end of the second revolution after the beginning of the motion, the magnitude of the tangential acceleration is