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glacier
a cold air mass
Depending on when it was formed, the size and speed it is moving it could be either an Avalanche or Glacier. If it is an incredibly old, slow moving, large, ice mass it is likely a Glacier; however if it is a quickly moving, small (relatively), ice mass it is an Avalanche.
It's a slow moving semiliquid.
Generally, the velocity as it is squared, but I suppose if you had some titanic mass moving at a very slow velocity then it could be the mass.
glacier
a cold air mass
A glacier
The slow moving train has a much higher mass than the high-speed bullet, but the bullet has a faster velocity than the slow moving train so their momentum is the same.
Depending on when it was formed, the size and speed it is moving it could be either an Avalanche or Glacier. If it is an incredibly old, slow moving, large, ice mass it is likely a Glacier; however if it is a quickly moving, small (relatively), ice mass it is an Avalanche.
AA
Aa
AA
bayou
jogging
ask your teacher
Momentum = mass * velocity. The mass of a train is massive so it'll have a high momentum