Elastic Potential Energy 1. A 20 kg box is attached to a compressed spring that has a spring constant of 300 N/m. The
spring is compressed 30 cm. What is the PEe of the spring?

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little