Answer:
24.5 N
Explanation:
The falling object experiences its weight acting downwards and the air resistance in the opposite direction.
The air resistance increases with velocity so there may come a point, depending on the shape of the object and if there is sufficient height, where these 2 forces are equal.
Since the object has no net forces acting on it it will, according to Newton, no longer accelerate but continue with a constant velocity.
This is called Terminal Velocity.
So:
Air resistance = weight
R
=
m
g
R
=
2.5
×
9.8 = 24.5N
Try B, it seems correct. I’m very sorry if i’m incorrect.
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