Projectile motion question

timer Asked: Feb 19th, 2015

Question description

  1. A projectile is fired at an acute angle with the horizontal from the edge of a vertical cliff. Ignore air resistance. (a) Is the projectile’s velocity ever only horizontal? If so, when; if not, why not? (b) Is its velocity ever only vertical? If so, when; if not, why not? (c) Are there any points at which the projectile’s acceleration is either parallel or perpendicular to its velocity? Explain. 

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