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Unformatted text preview: A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ball's path, its velocity is _______. a. entirely vertical b. entirely horizontal c. both vertical and horizontal d. zero e. not enough information given to know. A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ball's path, its acceleration is _______. (Neglect the effects of air resistance.) a. entirely vertical b. entirely horizontal c. both vertical and horizontal d. zero e. not enough information given to know. At what point in its path is the horizontal component of the velocity (v x ) of a projectile the smallest? a. The instant it is thrown. b. Halfway to the top. c. At the top. d. As it nears the top. e. As it nears the end of its path. f. It is the same throughout the path. At what point in its path is the vertical component of the velocity (v y ) of a projectile the smallest?...
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This document was uploaded on 04/15/2011.
 Spring '09
 Physics

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