Solving for Initial Velocity: When Angles, Distances are Given

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SUMMARY

The discussion focuses on calculating the initial velocity of a projectile when given the angle of launch, horizontal distance, and vertical distance. The specific scenario involves a baseball hit at a 35-degree angle, clearing a 21-meter wall located 130 meters from home plate, with an initial height of 1 meter. Participants emphasize the need to utilize multiple equations, such as the range equation, to accurately determine initial velocity, time, and velocity components. The importance of correctly applying physics concepts is highlighted to avoid discrepancies in calculated results.

PREREQUISITES
  • Understanding of projectile motion principles
  • Familiarity with kinematic equations
  • Knowledge of trigonometric functions related to angles
  • Ability to apply the range equation in projectile motion
NEXT STEPS
  • Study the derivation and application of the range equation in projectile motion
  • Learn how to decompose projectile motion into horizontal and vertical components
  • Explore the use of kinematic equations to solve for time of flight
  • Investigate the effects of initial height on projectile trajectory calculations
USEFUL FOR

Students studying physics, educators teaching projectile motion, and anyone involved in sports analytics or engineering applications related to projectile dynamics.

princesspriya
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Homework Statement


how can you find the initial velocity if the angle, horizontal distance and the vertical distance is given?

Homework Equations


The Attempt at a Solution



every equation i use gives me a different answer so i have no clue which one is correct
 
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You will usually need to use more than one equation. Based on the situation some will be more useful than others. It would be best if you posted a specific question because we have no idea what concepts you may not be applying properly to your problem.
 
a ball player hits a home run and the baseball just clears a wall 21 m high located 130m from home plate. The ball is hit at an angle of 35 degrees to the horizontal and air resistance is negligible. Assume the ball is hit at a height of 1 m above the ground. What is the initial speed, time and the components of velocity of the ball?

- to find the initial velocity i used the range equation to solve for Vi since i have the range which is 130m. but the answer i got is wrong.
 

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