Four students are determining how to calculate the acceleration of a ball rolling down a ramp in the main gym. They measured the distance the ball travelled on the ramp and the time it took for the ball to roll down the ramp. The ball was released from the top, with an initial velocity of Om/s.

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.