How does energy transform from the input energy to the final output energy?

increase masses, decrease separation

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

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.