Multiple choice identify the letter of the choice that best completes the statement or answers the question. precision pertains to all of the following except a. reproducibility of measurements. b. agreement among numerical values. c. sameness of measurements. d. closeness of a measurement to an accepted value.

your answer would be a. 12.5 kg

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.

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(jacemorris04)