Golf ball question

  • Thread starter qswdefrg
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  • #1
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Homework Statement



A golf ball is hit from the freeway at a speed of 40 m/s and an angle of 45 degrees. Upon hitting the ground the ball bounces off the ground at the same angle but loses 75% of its speed on each bounce. How far does the ball travel before stopping?

Homework Equations



Kinematics equations

The Attempt at a Solution



First, I tried breaking the problem into components. Then I realized both x- and y- components of velocity are the same. I'm stuck because I can't exactly sub values into the kinematics equations to find displacement, seeing that I'm not given acceleration nor time.

Any sort of help/hint would be greatly appreciated.
 
Last edited:

Answers and Replies

  • #2
20
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If a = -9.8 m/s^2, then I'd be able to calculate dy... so would I have to repeat this calculation until v2 = 0 and add up all the displacements? Or is there an simpler method?
 

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