Q: 68 (NDA-II/2014)

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A bullet is fired vertically up from a 400 m tall tower with a speed 80 m/s. If g is taken as 10 m/s2, the time taken by the bullet to reach the ground will be
question_subject: 
Science
question_year: 
2014
question_exam: 
NDA-II
stats: 
0,16,88,32,48,16,8