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 times of flight are same, the ratio of their speeds of projection v A : v B is:

Question

Aicharya · Accepted Answer

For same time of flight, vertical component of velocity of projection must be same. Therefore, v A sin 45 ° = v B sin 30 ° ⇒ v A v B = 1 2 1 2 ⇒ v A v B = 1 2

Projectiles A and B are thrown at angles of 45 ° and 60 ° with vertical respectively from top of a 400 m…

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