Your high school quarterback has thrown a football horizontally down the football field. He needs to increase the time the ball is in the air to give the receiver an opportunity to get in the right position to catch the ball. Which factor will increase the flight time of the football? A. Increasing the horizontal velocity of the ball
B. Decreasing the horizontal velocity of the ball
C. Increasing the vertical height from which the ball is thrown
D. Decreasing the vertical height from which the ball is thrown

self note *11

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.