You are jumping up and down on a trampoline, under the watchful supervision of your gymnastics coach. (We've included the coach because trampolines are dangerous and we don't want to be sued for any virtual injuries that might occur during this exam.) Each time you bounce off the trampoline, you stretch its surface and springs. Just before the surface and springs reach their maximum stretch, your velocity is
A. downward but your acceleration is upward.
B. downward and your acceleration is downward.
C. upward but your acceleration is downward.
D. upward and your acceleration is upward.
Answer:A
You are jumping up and down on a trampoline, under the watchful supervision of your gymnastics coach. (We've included the coach because trampolines are dangerous and we don't want to be sued for any virtual injuries that might occur during this exam.) Each time you bounce off the trampoline, you stretch its surface and springs. Just before the surface and springs reach their maximum stretch, your velocity is
A. downward but your acceleration is upward. B. downward and your acceleration is downward. C. upward but your acceleration is downward. D. upward and your acceleration is upward.