What momentumwould a 423,000,000kg ship have if it moves with a velocity of +11.6m/s

Anybody wanna ? (picture included? )

The air that we breath is made mostly of which gaseous molecule

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.