A 0.25 kilogram shoe is thrown out a window during a physics class. The shoe attains an acceleration of 9.8 m/s ^ 2 before hitting an unsuspecting individual standing on a sidewalk. How much force (in Newtons) did the shoe hit with?

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.