A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
A student stands at the top of a cliff and throws a stone horizontally at a speed of 8 m/s. They see the stone splash into the water 5.5 seconds later.
a) How high is the cliff?
b) What horizontal distance does the stone travel?
anonymous
 4 years ago
A student stands at the top of a cliff and throws a stone horizontally at a speed of 8 m/s. They see the stone splash into the water 5.5 seconds later. a) How high is the cliff? b) What horizontal distance does the stone travel?

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[t=\sqrt{\frac{2h}{g}}\] You can derive this equation if you want. From here you can find h with known t (a). For b, simply: \[x=v_x*t\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I'm sorry, can you explain it further? I didn't get it :/

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Let's start from beginning: \[h=v_{0y}t+\frac12 gt^2\] Familiar with this?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Yes :) Okay, now what?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0since the student throw the stone horizontally, it means v0y=0 can you find h now? :)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0gravity acceleration, with value 9.8 m/s^2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0So, h= (1/2) * 9.8 * (5.5)^2 ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Good, that's correct.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Oh okay, and how do I find the horizontal distance?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0This is the equation for horizontal motion: \[x=v_{0x}t\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Wait, what is v0x and x? :/

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0vox is initial horizontal velocity, and x is horizontal displacement.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0So, horizontal velocity is 8 m/s? And time is 5.5 seconds?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Yes, now you can find x.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Oh :/ Wow, THANK YOU SO MUCH for spoon feeding me through the entire problem! :D

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0It's okay. I love teaching :D

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0And you're damn good at it too :)
Ask your own question
Sign UpFind 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
 Engagement 19 Mad Hatter
 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.