4) An object has a mass of 19.0 kg, and has a kinetic energy of 1500 J. What is the objects speed? 5) An object has a speed of 15 m/s, and a kinetic energy of 1200 J. What is the objects mass?
40
6) An object has a potential energy of 19,000 J at a height of 2.75 m. What is the objects mass?

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

13) a 14) a15) b16) i don't know sorry17) a (maybe)

The correct answer is b.hoped i you