What is the kinetic energy of an object with a mass of #15 kg# that has been in freefall for #3 s#?

1 Answer
Dec 27, 2015

Answer:

The kinetic energy is #dK=1/2m(at)^2=6496J#

Explanation:

You find the final speed on the object #v=at#
and consider the equation #dK=1/2mv^2=6496J#
That's all.