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The projectile motion is one kind of common very important movement form. The mechanics teaching material usually when involves the projectile motion the discussion is neglects the air drag, but the movement object must receive the air drag in the air the function. The air drag to the projectile motion influence is not allow to neglect. This article has analyzed the air drag regularity, and studies the air drag to the projectile motion the influence. Mainly discussed that when the resistance and the speed first power is proportional the projectile motion follows the law of motion, obtains its locus equation through the theory inferential reasoning, will project the situation the altitude range and the firing distance and the ideal situation has carried on the comparison, causes the people to be more thorough to the projectile motion understanding.
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Projectile Motion is a common form of movement is very important. Mechanical materials usually involve throwing moveme