Floor, initially moving with some initial velocity, accelerates until its momentum has increased by a factor of 3.83. By what factor has its kinetic energy increased? 

they should be similar or the same

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

there are no contact forces mentioned on the list of choices that you've provided.

answerscientific theory;