5. The voltage provides the electrical energy needed for an electromagnet to do work, like lifting iron filings. But can you use too much? Explain

car a and b are moving in opposite directions

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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.