Coach Deas demonstrates a throw-in at soccer practice by throwing the ball. The ball travels 20 yards before the force of gravity brings it to the
ground.

A. Newton’s first law
B. Newton’s second law
C. Newton’s third law

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)