A rookie quarterback throws a football with an initial upward velocity component of 12 m/s and a horizontal velocity component of 20 m/s. Ignore air resistance. (a) How much time is required for the football to reach the highest point of the trajectory? (b) How high is this point? (c) How much time (after it is thrown) is required for the football to return to its original level? How does this compare with the time calculated in part (a)? (d) How far has the football travelled horizontally during this time?

A rookie quarterback throws a football with an initial upward velocity component of 12 m/s and a horizontal velocity component of 20 m/s. Ignore air resistance. (a) How much time is required for the football to reach the highest point of the trajectory? (b) How high is this point? (c) How much time (after it is thrown) is required for the football to return to its original level? How does this compare with the time calculated in part (a)? (d) How far has the football travelled horizontally during this time?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

A rookie quarterback throws a football with an initial upward velocity component
of 12 m/s and a horizontal velocity component of 20 m/s. Ignore air resistance.
(a) How much time is required for the football to reach the highest point of the
trajectory? (b) How high is this point? (c) How much time (after it is thrown) is
required for the football to return to its original level? How does this compare with
the time calculated in part (a)? (d) How far has the football travelled horizontally
during this time?

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