If a small raindrop falls through aira)Its velocity goes on increasing...
Velocity of raindrop increases until it reaches the terminal velocity.
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If a small raindrop falls through aira)Its velocity goes on increasing...
It is because, when it falls in speed after some time it get constant due to gravity
If a small raindrop falls through aira)Its velocity goes on increasing...
Explanation:
When a small raindrop falls through the air, several forces act on it. The main forces acting on the raindrop are gravity and air resistance. Initially, when the raindrop starts falling, the force of gravity is greater than the air resistance, causing the raindrop to accelerate.
1. Initial stage:
- At the beginning, when the raindrop falls, its velocity increases due to the force of gravity.
- The force of gravity pulls the raindrop downward, causing it to accelerate.
- As the raindrop accelerates, its velocity continues to increase.
2. Equilibrium stage:
- After some time, the raindrop reaches a state of equilibrium where the force of gravity is balanced by the air resistance.
- At this stage, the acceleration of the raindrop becomes zero, and it falls with a constant velocity.
- The constant velocity is known as the terminal velocity.
3. Terminal stage:
- As the raindrop continues to fall, it reaches a point where the air resistance becomes greater than the force of gravity.
- At this point, the raindrop's velocity stops increasing and becomes constant.
- The constant velocity is maintained until the raindrop reaches the ground.
Conclusion:
In conclusion, when a small raindrop falls through the air, its velocity initially increases due to the force of gravity. However, as it continues to fall, the raindrop reaches a state of equilibrium where the force of gravity is balanced by the air resistance. At this point, the raindrop falls with a constant velocity until it reaches the ground. Therefore, option C, "Its velocity goes on increasing for some time and then becomes constant," is the correct answer.