The two forces are equal in magnitude
Explanation:
We can answer this question by applying Newton's second law of motion, which states that
[tex]\sum F = ma[/tex]
where
[tex]\sum F[/tex] is the net force acting on an object
m is the mass of the object
a is its acceleration
In this problem, the airplane is moving with constant velocity, so its acceleration is zero:
a = 0
This means that the equation becomes
[tex]\sum F = 0[/tex]
There are two forces acting on the airplane in the horizontal direction:
- The forward force exerted by the engine, F
- The frictional drag force, D, backward
So the net force on the plane along the horizontal direction is
[tex]\sum F = F-D[/tex]
However we also said that
[tex]\sum F = 0[/tex]
Combining the two equations, we find
[tex]F-D=0 \rightarrow F=D[/tex]
So, the two forces have same magnitude.
Learn more about Newton's second law:
brainly.com/question/3820012
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