A train is moving up a steep grade at constant velocity its wagon breaks loose and starts rolling freely along the track. After 8.0s, choose is 55m behind the train. What’s the acceleration of the wagon?

which statement about this sum is true? −245+2.7

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )

measure their densities same density, same sub

i don't understand. explain it clearly