An object has a mass of 6 kg. The object's kinetic energy uniformly changes from 120 KJ to 72 KJ over t in [0, 4 s]. What is the average speed of the object?
1 Answer
Jan 28, 2017
Average speed is
Explanation:
As one Joule is equal to
As kinetic energy
and initial velocity is
and final velocity is
and average speed is