SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Suppose you are conducting an experiment concerning gravities effects on falling objects, and you want to minimize air resistance. Which of these would be the most useful and practical way to do these?
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use aerodynamic objects
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se extremely dense objects
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conduct the experiment in vaccum
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conduct the experiment at various altitudes
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Explanation:
Detailed explanation-1: -As an object falls, it picks up speed. The increase in speed leads to an increase in the amount of air resistance.
Detailed explanation-2: -Air resistance decreases the rate of acceleration of an object by counteracting the force of gravity. Over time, due to air resistance, a falling object will no longer accelerate and reach its terminal velocity, when there is zero acceleration.
Detailed explanation-3: -A falling object’s air resistance can be calculated by multiplying the air density times the drag coefficient times the area by two and then multiplying by velocity. Gravity and air resistance are the two natural field forces that move everything on Earth.
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