What happens if you move a magnet near a coil of wire?

Could someone me find the answer to this problem.

The slope of a velocity time graph over any interval of time gives the during that interval

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.