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Grade: 11
        
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
 
 
20 days ago

Answers : (1)

Khimraj
2894 Points
							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
20 days ago
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