SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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“Swimmers wearing full body suits that reduced underwater friction were able to swim faster than wimmers.What evidence from the passage supports this statement?
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Some swimmers shaved their entire bodies to reduce friction caused by hair and increase their speed
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After losing contests by a tenth of a second, some swimmers started ridding their bodies of hair
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Swimmers wearing full-body suits swam at the same speed as swimmers wearing shirts and shorts that clung closely to their skin
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Swimmers wearing full-body suits began to break world records and started winning all the races
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Explanation:
Detailed explanation-1: -As the soccer ball spins, the frictional force between the air and surface of the ball causes the air around it to reach in the direction of the spin. At top spin, the ball results in the velocity of the air at the top half/section of the ball to decreases compared to the air velocity at the bottom.
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