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A ball is thrown upwards from the ground with a initial velocity of 10 metre per second. air exerts a constant retardation of 5 metre per second the A) time of ascend is equal to time of descend B) time of Ascend greater than time of descend C) time of descend greater than time of ascend

A ball is thrown upwards from the ground with a  initial velocity of 10 metre per second.
air exerts a constant retardation of 5 metre per second the
A) time of ascend is equal to time of descend
B) time of Ascend greater than time of descend
C) time of descend greater than time of ascend
 
 

Grade:11

1 Answers

Khimraj
3007 Points
4 years ago
During its upward motion, it will face a total retardation of (9.8 + 5) m/s^2
And during its downward motion, it will face a acceleration of (9.8 – 5) m/s^2.
so time of descend greater than time of ascend

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