Have the heaviest in the back, progressively to the lightest in the front, going first.
Answer:
Alrighty, children its grandma Karl today we explain physics; The larger and heavier the box, the more force you must use when pushing. thus they are moving at a constant speed for all the boxes. SO The answer is B
Explanation:
The solution along with the diagram can be found in the attachment. Feel free to raise doubts.
gluons
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In chemical reactions, chemical bonds are broken and reformed, and release their excess bond energy
5m/s
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