Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

crickamaxwell

  • 2 years ago

Heather hits a tennis ball upward with an initial speed of 32 feet per second. After how many seconds does the ball hit the ground? Use the formula h = rt − 16t^2 where h represents height in feet and r represents the initial speed.

  • This Question is Open
  1. across
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You have all you need to solve this problem. Where are you stuck?

  2. across
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Basically, you want to find a solution to the equation\[0=32t-16t^2,\]where \(t\neq0\).

  3. 2le
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You should also note that \[h=h_0 + v_0t+\frac{1}{2}gt^2\] where h is your height, h_0 is your initial height when you threw the ball, v_0 is your initial velocity, and g is the force of gravity (at 32ft/sec^2) You may run into this equation again in physics and this is the equation that is used there.

  4. across
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You could also derive it from an ordinary differential equation if you feel like it...

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

    • Attachments:

Ask your own question

Sign Up
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.