Which of the following statements is true? all work gains some energy as heat. radiation is the transfer of heat in solids. an insulator speeds up the transfer of heat. all moving objects experience friction.

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.