Hypothermia is a condition caused by exercising in extreme heat.
2 answers:
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The two forces are equal in magnitude
Explanation:
We can answer this question by applying Newton's second law of motion, which states that
where
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
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
However we also said that
Combining the two equations, we find
So, the two forces have same magnitude.
Learn more about Newton's second law:
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