A scientist wants to measure the relationship between humidity in
the summer and the number of home runs in baseball. Which of the
following is a testable question about this topic?
O A. Are there more home runs during the more humid months
of the summer?
B. Should fans like the players who hit the most home runs?
O C. Are home runs more fun to watch than normal hits?
D. Are home runs more exciting during the summer?

Aspring has a relaxed length of 33 cm (0.33 m) and its spring stiffness is 6 n/m. you glue a 76 gram block (0.076 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 15 cm. you make sure the block is at rest, then at time t=0 you quickly move your hand away. the block begins to move upward, because the upward force on the block by the spring is greater than the downward force on the block by the earth. calculate y vs. time for the block during a 0.09-second interval after you release the block, by applying the momentum principle in three steps each of 0.03-second duration.