What does "Position (m)” represent in the graph? the x-axis
a direct relationship
the independent variable
the dependent variable

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

not too sure thinking all accelerations are pointed down