Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kbarnes7 Group Title

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.

  • 11 months ago
  • 11 months ago

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

    |dw:1379214266422:dw|

    • 11 months ago
  2. kbarnes7 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so where do i go from there

    • 11 months ago
  3. shubham.bagrecha Group Title
    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.

    • 11 months ago
  4. shubham.bagrecha Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    then find R for 45 degrees with this u.

    • 11 months ago
  5. kbarnes7 Group Title
    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

    • 11 months ago
  6. shubham.bagrecha Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    what u you got?

    • 11 months ago
  7. kbarnes7 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    98 m?

    • 11 months ago
  8. shubham.bagrecha Group Title
    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. \[R=\frac{800 \sqrt{3} \sin(2*45)}{10}\]

    • 11 months ago
  9. shubham.bagrecha Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

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

    • 11 months ago
  10. kbarnes7 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

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

    • 11 months ago
    • Attachments:

See more questions >>>

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.