Highest point on trajectory of tennis ball

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SUMMARY

The discussion focuses on a physics problem involving projectile motion, specifically analyzing the trajectory of a tennis ball thrown at a speed of 21.0 m/s and an angle of 40.0 degrees. To determine the height at which the ball hits a vertical wall located 23.0 m away, participants suggest using standard constant acceleration equations for both horizontal and vertical motions. Additionally, the discussion addresses whether the ball has reached its highest point upon impact with the wall, emphasizing the need for a clear justification based on the calculated trajectory.

PREREQUISITES
  • Understanding of projectile motion principles
  • Familiarity with constant acceleration equations
  • Knowledge of trigonometric functions for angle calculations
  • Ability to analyze motion in two dimensions
NEXT STEPS
  • Study the equations of motion for projectile trajectories
  • Learn how to decompose motion into horizontal and vertical components
  • Explore the concept of maximum height in projectile motion
  • Practice solving similar physics problems involving angles and distances
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This discussion is beneficial for physics students, educators, and anyone interested in mastering projectile motion concepts and problem-solving techniques in kinematics.

firebird99
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Homework Statement



A tennis ball is thrown toward a vertical wall with a speed of 21.0 m/s at an angle of 40.0 degrees above the horizontal. The horizontal distance between the wall and the point where the tennis ball is released is 23.0 m.

a. At what height above the point of release does the tennis ball hit the wall?

b. Has the tennis ball already passed the highest point on its trajectory when it hits the wall? Justify your answer.

Homework Equations


The Attempt at a Solution



Sorry i can't provide more information but my teacher assigned us this problem, he said it would be difficult and honestly I have no idea what to do. Any help will be appreciated.

Thank-you
 
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Welcome to PF!

Hi firebird99! Welcome to PF! :smile:

Use the standard constant acceleration equations for the x and y directions separately, to get two equations for t and h, and then eliminate t. :wink:
 

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