Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
Kinematics in Two Dimensions; Vectors
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3-2 to 3-4: Vector Addition
3-5 and 3-6: Projectile Motion
3-8: Relative Velocity

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 27

A projectile is fired with an initial speed of 36.6 m/s at an angle of 42.242.2^\circ above the horizontal on a long flat firing range. Determine

  1. the maximum height reached by the projectile,
  2. the total time in the air,
  3. the total horizontal distance covered (that is, the range), and
  4. the speed of the projectile 1.50 s after firing.
  1. 30.8 m30.8\textrm{ m}
  2. 5.02 s5.02\textrm{ s}
  3. 136 m136\textrm{ m}
  4. 28.9 m/s28.9\textrm{ m/s}
By shichunye on Tue, 2/28/2017 - 9:37 PM

1. why is it 36.6m/s(sin42)-(9.80)(1.50), doesnt the equation say V0sin+ayt?

2. how did you obtain 27.113m/s^2 for Vx?

By aestheticuscreated on Sun, 3/12/2023 - 1:44 PM

Hello Mr. Dychko, I don’t know if it’s a calculation error on my part but for part c I keep getting 56.0538…

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