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College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs
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Solved: Answer the following questions for projectile

Chapter 3, Problem 14

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QUESTION:

Answer the following questions for projectile motion on level ground assuming negligible air resistance (the initial angle being neither \(0^{\circ}\) nor \(90^{\circ}\)): (a) Is the acceleration ever zero? (b) Is the acceleration ever in the same direction as a component of velocity? (c) Is the acceleration ever opposite in direction to a component of velocity?

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QUESTION:

Answer the following questions for projectile motion on level ground assuming negligible air resistance (the initial angle being neither \(0^{\circ}\) nor \(90^{\circ}\)): (a) Is the acceleration ever zero? (b) Is the acceleration ever in the same direction as a component of velocity? (c) Is the acceleration ever opposite in direction to a component of velocity?

ANSWER:

Step 1 of 4

  • Introduction:
  • The projectile is thrown at some arbitrary angle.
  • The initial velocity let’s say V.
  • It’s horizontal and vertical components are Vcos and V sin respectively.
  • There is only one force which is the force of gravity acting downwards. Therefore the acceleration is towards downwards and has no horizontal component.

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