The net force on the quarterback when he is hit by two linebackers running eastwards is 255N.
Force is a vector quantity, we must recall that if two forces act in the same direction, we obtain the net force by adding the two forces together. If two forces act in opposite direction, we obtain the net force by subtracting the forces from each other.
Since the both linebackers are running East, the net force is obtained as; 105 N + 150 N = 255 N.
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<em>Read explanation.</em>
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Robert Hooke defined what a cell, in other words, he gave that name to what we now know as a "cell".
How he came up with that name is simple, and doesn't involve science or biology itself. All happened when he was looking to a sample of oak bark, and saw this tiny enclosed structures, that reminded him of a cell.
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BiologiaMagister
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Other symptoms can include: hallucinations and delusions; increased agitation and confusion; depression and other mood disorders; personality changes, such as irritability and a reduced threshold for frustration; and an inability to focus or concentrate.
