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Soumyadeep Grade: 11
        
A ball is thrown vertically upward with a  velocity u from the top of a tower.if it strikes the ground with velocity 3u, the time taken by the ball to reach the ground is
2 years ago

Answers : (3)

Nicho priyatham
626 Points
										
4u/g is the ans correct 
 
2 years ago
Nicho priyatham
626 Points
										
well it is so simple a=(V-U)/t
here a=-g v=-3u u=u 
find t
2 years ago
Mahin Tazbiya
15 Points
										
initial velocity = u =-u
final velocity = v = 3u
acceleration due to gravity = g
       v = u + gt
      3u = -u + gt
3u+u/g = t
4u/g = t
2 months ago
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