Range formula

  • Thread starter zman2011
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  • #1
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Homework Statement


During a high school track meet, an athlete performing the long jump runs and leaps at an angle of 25 degrees and lands in a sand pit 8.5 m from his launching point. If the launch point and landing point are at the same height, y=0m, with what apeed does the athlete land?



Homework Equations





The Attempt at a Solution


How do i use range formula to find initial velocity
 

Answers and Replies

  • #2
lewando
Homework Helper
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The range formula is kind of specialized to give you range if you know V, θ, and y(0). Since you know range, θ, and y(0) you could isolate v, I suppose. The algebra looks painful too me. I'd rather find v using standard kinematic equations for x-axis motion and y-axis motion--2 equations, 2 unknowns (v and T).
 

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