A spring attached to a mass is at rest in the initial position (not shown). The spring is compressed in position A and is then released, as shown in position B. Which equation describes conservation of energy in position A? E = one halfmv2 E = mgh E = one halfkx2 E = one halfk2x2

Which of the following is an advantage to taking the psat? a. scores are reviewed for college admission. b. you can enter a competition to be eligible for scholarships. c. it prepare you for the act taken later in high school. d. you earn points, which are transferred to your sat score.