Before an ozone layer formed to reduce radiation, life existed a. in the air. c. in oceans and underground. b. in trees and plants. d. on land. Please select the best answer from the choices provided A B C D

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)

16

explanation:

the marks go by 4s

it is reliable if two scientists recorded it