Ball 1 is thrown straight down from the top of a building with a given initial speed. At the same time ball 2 is thrown straight up from the top of the same building with the same initial speed. Air resistance is negligible. If ball 1 has a speed v just before hitting the ground, what is the speed of the ball 2 just before hitting the ground? V/2
7/4
4v
2v

Which of the following is a direct benefit of the use of assembly lines in production a. laws against theft fraud and coercion are needed to protect free choice. b. the government needs to plan efficient outcomes. c. competition among producers by itself cannot ensure a wide range of consumer choices. d. works pressure the government to guarantee minimum wages