The kinetic energy of a body k is defined in terms of mass m and velocity v. If m+∆m=(0.352+0.001) kg and v+∆v=(1.91+0.01) ms^2. Find k and the absolute error.

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?