The volume of a block of iron is 9 cc and its mass is 70.83
g. what would be the volume of a block of aluminum that has the same mass as the block of iron? (the density of aluminum is 2.70 g/cc)

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.