Which redox equation is correctly balanced? a) cr(s) + 3 fe2+(aq) -> 2 cr3+ (aq) + fe(s) b Pb(s) + 2H+(aq) -> pb2+ (aq) + H2(g)

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)

answer; 4 electrons;