A 52.0 kg diver jumps off a diving board with an upward velocity of 1.7 m/s. The diving board bounces off a spring with a spring constant of 4100 N/m. Ignore her horizontal velocity. How far did the diver compress the spring in order to achieve her initial upward velocity?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.