An object has a mass of #4 kg#. The object's kinetic energy uniformly changes from #48 KJ# to # 320 KJ# over #t in [0, 12 s]#. What is the average speed of the object?
1 Answer
Jan 15, 2017
Average speed is
Explanation:
Kinetic energy of an objeect of mass
As the mass of the object is
We have
and as the mass of the object is
Hence average speed is