During a baseball game a pitcher threw a baseball, and the catcher, who was behind home plate, caught it. which is true about the pitcher when the catcher caught the ball? a) he saw the catcher catch the ball first. b) he heard and saw the ball at the same time. c) he heard the sound of the catcher's mitt first. d) he saw the catcher catch the ball, but did not hear it.

Which of the following describe possible scenarios? a) an object has zero instantaneous velocity and non-zero acceleration. b) an object has negative acceleration and is speeding up. c) an object has positive acceleration and constant velocity. d) an object has positive velocity and zero acceleration. e) an object has increasing positive position and negative velocity. f) an object has decreasing positive position and negative acceleration.