khandon4970
23.02.2021 •
Biology
9)
There are four forces acting on the box: A spring pulls with a force of 40 N. The force of gravity acts downward; and the force of the table is pushing up on the box. What MUST be true of the frictional force if the box moves across the table?
A) It is equal to the effort force.
B) It is less than the effort force.
C) It is more than the effort force.
D) It is equal to the force of gravity.
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Ответ:
probably because of how thuings are, along with the moving process
Explanation: