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Projectiles A and B are thrown at angles of 45° and 60° with vertical respectively from top of a 400 m high tower. If their ranges and times of flight are same, the ratio of their speeds of projection v A : v B is : [Take g = 10 m/s 2 ]

1. 1 : 3
2. 1 : 2
3. 2 : 1
4. 1 : 2

Correct answer: 1 : 2

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