Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kbarnes7

  • one year ago

a machine can toss a golf ball a distance of 120 m on a level playing field when the machine is set to an angle of 30 degrees. How far can the machine toss the ball when it is set to an angle of 45 degrees.

  • This Question is Closed
  1. shubham.bagrecha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1379214266422:dw|

  2. kbarnes7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so where do i go from there

  3. shubham.bagrecha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[R=\frac{u^2 \sin(2 \theta)}{g}\] \[\theta = 30 degrees\]R=120m \[120=\frac{u^2 \sin(2 *30)}{10}\] find u.

  4. shubham.bagrecha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    then find R for 45 degrees with this u.

  5. kbarnes7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok, so is it 170 m, 98 m , 140 m , 85 m or 150 m? trying to check my answer

  6. shubham.bagrecha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what u you got?

  7. kbarnes7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    98 m?

  8. shubham.bagrecha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[u^2 = \frac{120*10}{\sin 60}\] \[u^2 = 800\sqrt{3}\] now theta = 45 \[R=\frac{u^2 \sin(2*45)}{10}\] substitute value of u^2. \[R=\frac{800 \sqrt{3} \sin(2*45)}{10}\]

  9. shubham.bagrecha
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[R=80\sqrt{3}\]

  10. kbarnes7
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    man i missed that up, so with sig figs.... 140 m?

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.