Question

A disk has radius of 1 m. It starts to rotate from condition of rest with constant acceleration. In 10 seconds it already has speed of 100 m/s/ Determine the speed, and total acceleration in 15 seconds after it begin the rotation motion.

Answer 1

100m/s in 10s
that is
acceleration is 10m/s
so in 15s total speed will be
15*10m/s
150m/s
total acceleration is also 150m/s as it started form 0m/s that is at rest or no motion