A football is punted from the ground, it passes through the apex of its flight, and it begins its downward decent, as shown. When its height above the field is h=1.4m, the horizontal and vertical components of its velocity are observed to have the values vhorizontal=15.5m/s and vvertical=3.25m/s, respectively. Use a Cartesian coordinate system with the origin located at the initial position of the football. Ignore air resistance. Part (a)  Determine the magnitude of the horizontal component of the football’s initial velocity v0,x, in terms of vhorizontal, vvertical, g, and h.  Part (b)  Calculate the time, in seconds, from when the football left the ground until it is

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 3P: A particle initially located at the origin has an acceleration of a=3.00jm/s2 and an initial...
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A football is punted from the ground, it passes through the apex of its flight, and it begins its downward decent, as shown. When its height above the field is h=1.4m, the horizontal and vertical components of its velocity are observed to have the values vhorizontal=15.5m/s and vvertical=3.25m/s, respectively. Use a Cartesian coordinate system with the origin located at the initial position of the football. Ignore air resistance.

Part (a)  Determine the magnitude of the horizontal component of the football’s initial velocity v0,x, in terms of vhorizontal, vvertical, g, and h. 

Part (b)  Calculate the time, in seconds, from when the football left the ground until it is descending at a height of h=1.4m.

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