As shown in the diagram below, the forward thrust of the engine is 85N. The wind and air resistance is providing 100 N of force to the reverse.
100 N
85 N
What is the net force on the airplane?
85 N right
100 N left
185 N right
15N left

help :,)

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.

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