The paratrooper of mass 80 ππ descends vertically at a constant velocity of 3 π π β1taking the acceleration of free fall as 10 π π β2. Find out what is the net force acting on him?
Correct answer: A. Zero
- A. Zero
- B. 800 π upward
- C. 800 π downward
- D. 240 π downward
Explanation
The correct answer is zero net force. Since the paratrooper is descending at a constant velocity, there is no acceleration (Newton's first law). This means the forces are balanced: the gravitational force (weight) is exactly balanced by the upward force from the parachute. Thus, the net force is zero. Other options are incorrect because they suggest a net force which would imply acceleration, conflicting with the situation of constant velocity.
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