An airplane is accelerating at 8 m/s?. Each second its speed increases by how much
m/s.

8

Explanation:

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magnified images possible images can be real = projected onto a screen

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.