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# A projectile is fired upward at an angle above the ISBN: 9780321675460 31

## Solution for problem 9DQ Chapter 3

University Physics | 13th Edition

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Problem 9DQ

A projectile is fired upward at an angle ? above the horizontal with an initial speed v0. At its maximum height, what are its velocity vector, its speed, and its acceleration vector?

Step-by-Step Solution:

Solution 9DQ Step 1: Given data The projectile is projected upward at an angle Initial speed = v 0 To find velocity vector, speed and acceleration vector at its maximum height Step 2: To find Velocity vector Horizontal component of velocity v = x cos0 Vertical component of velocity v y v si0 - gt At maximum height v = v cxs 0 v = 0 y Therefore Velocity vector v = v c0s i + 0j ˆ Velocity vector v = v cos i ˆ 0

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##### ISBN: 9780321675460

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