What is the speed of a 2.5-kilogram mass after it has
fallen freely from rest through a distance of 12 meters?

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.