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Grade: 11
        
A ball is thrown vertically upwards from the top of a tower with a speed of 100m/s.It strikes the pond near the base of the tower after 25 second. The height of the tower is....
2 years ago

Answers : (1)

Arun
22993 Points
							
Dear Hemant
 
Here s is in negative because final position lie below the initial position .
so use 
-s = ut - 1/2 at^2
where u = 100 m/s
t is 25 sec
and g = 10 m/s^2
solve it 
the answer is 625 m
 
Regards
Arun (askIITians forum expert)
2 years ago
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