If we want to reduce the drag force by air on an object then we have to ____________________.

polish the object

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change the shape of the object

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use lubricants

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reduce the weight of the object

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Solution

The correct option is B change the shape of the object
Reducing weight, using lubricants or by polishing the object we can reduce its sliding, static, rolling friction but not the air drag. Air drag depends on the shape and speed of the object in air.

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Similar questions

(a) What is the drag? Give two examples for a drag force.
(b) How can you reduce the drag on something moving through the air?

If water decreases friction then why we have to aplly a lot of force to move a notebook lying on a wet wodden surface

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