Abumper cart has a mass of 200 kg and has a protective bumper around it that behaves like a spring. the spring constant is 5000 n/m. if the cart is moving at a speed of 8 m/s towards a solid barrier, and upon impact, is momentarily brought to rest. a) how much elastic potential energy will be stored in the spring when it is fully compressed? b) what is the average force exerted by the spring if it is compressed by a distance of 0.2 meters?

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.