physics

A rifle with a muzzle velocity of 480 m/s shoots a bullet at a target 45.6 m away. How high above the target must the rifle barrel be pointed to ensure that the bullet will hit the target? Neglect air resistance.

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asked by Will
  1. assuming the target is horizontal from the gun.

    distance bullet falls:
    h=1/2 g t^2 where the time is from
    t=45.6/480 seconds

    so aim h above the target.

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