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The friction of the air causes a vertica...

The friction of the air causes a vertical retardation equal to `10%` of the acceleration due to gravity. Take `g=10 m//s^(2)` the maximum height and time to reach the maximum height will be decreased by

A

`9%, 9%

B

11%, 11%

C

9%, 10%

D

11%, 9%

Text Solution

Verified by Experts

The correct Answer is:
A
`halpha(1)/(g),(h_(2)/(h_(1)= (g_(1)/(g_(2), (h_(2)-h_(1))/(h_(1)xx100= (g_(1)-g_(2))/(g_(2))xx100`M
`g_(1)g+ (g)/(10)= (11g)/(10)`
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