Hur the image shows a pendulum in simple harmonic motion. the pendulum starts at a and swings to e. which labels are correct? check all that apply. e: net force is zero. d: velocity is decreasing. acceleration is increasing. a: velocity is zero. c: acceleration is maximum. b: velocity is decreasing. net force is decreasing. e: velocity is maximum

The atoms in a sidewalk on a hot summer day are vibrating the atoms in the sidewalk on a freezing day in winter. a. more rapidly than b. more slowly than c. at the same speed as

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve