A cannon is rigidly attached to a carriage, which can move along horizontal rails but is connected to a post by a large spring,
initially unstretched, of force constant 20000 N/m. The cannon fires a 237 kg projectile at a velocity of 170 m/s directed 31.3 â—¦ above the horizontal. 31.3 â—¦ If the mass of the cannon and its carriage is 6475.91 kg, find the recoil velocity of the cannon.
The molecules of the water do not change, because you have not added any other chemicals. that’s why water does not change it just only that liquid water is more dense than solid water (ice) ice is less dense.