Answer:
2.75 N
Explanation:
Given that,
Box A has a mass 21.0 kg and box B has a mass 8.0 kg.
A horizontal force of 100N is exerted on box A.
Let a be the acceleration of the system. Using second law of motion,

Now applying Newton's second law to box B. So,

So, 2.75 N is the force that box A exerts on box B.
Answer: I think the answer is Non-foliated if it is wrong i am so sorry
don't forget to drop a heart.
Explanation:
Answer:
cells are the things that u are made of
Explanation:
the relationship between cells and organisms is that cells make up organisms and without cells we would not be here
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hope this helps plz mark as brainliest</em></u></h2>