Students in chemistry lab have been given the assignment to identify an unknown compound using the flame test procedures. the compound they are testing is a white crystal that emits a greenish light when placed into the flame. the unknown compound most likely contains a) barium. correct answer b) lead. c) sodium. d) strontium.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

catya that's not even a b or c