John wanted to test which will make his skateboard go the fastest down the hill he tested metal wheels wolden wheels and plastic wheels he travel 50 meters down the hill and calculated the speed what is the iv and dv of this question

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.