Answer:
1.
a. Diagram A
b. Diagram A should stay still, but Diagram B should move/roll to the left.
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2.
a. Diagram A and Diagram B are different because the object kg are different, one is 10kg and the other is 2kg.
b. Diagram B because its smaller making it lighter to move when Diagram A is 5 times larger, which will make it heavier.
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3.
a. Diagram A and Diagram B compare because the object both equal 3kg.
b. Diagram A will have a greater acceleration because 80n > 40n
