A community for students.
Here's the question you clicked on:
 0 viewing
carolinar7
 one year ago
a ball is thrown straight upward with a speed of 20 m/s with what speed does the ball hit the ground?
carolinar7
 one year ago
a ball is thrown straight upward with a speed of 20 m/s with what speed does the ball hit the ground?

This Question is Closed

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0and i have another one the total time of all remains in the air is 14 seconds. a)with what speed was the ball thrown upwards b)what is the maximum height reached by the ball

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0I say 20m/s for the first one

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0dw:1442888398239:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0at highest point speed=0m/s v=u+gt 0=209.8 t t=20/9.8=2s approx time of flight=2*2=4s

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes you are correct.

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0what is the 0 in 0=209.8 t

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0speed at highest point.

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0what about the second question?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0forsecond take t=14/2=7 seconds and proceed as i have done.

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0would the acceleration be + or

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0when going upward g is ve,when going down g is +ve.

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0why are you using half the time why not the whole 14 seconds?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1442899612575:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1442899702335:dw

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0oh so would it be 69 m/s

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0oh and is it + or  accelaration?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.069 m/s approx or68.6m/s

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0why is it  acceleration

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0if its going upwards

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0because it is retardtion and speed is decreasing.

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0and for be is it 48x10 m

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[0^268.6^2=2*9.8*h\] \[h=\frac{ 68.6*68.6 }{ 2*9.8 }=7*34.3=240.1m\]

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0a stone is dropped from 150 meters high .initial velocity is zero. a)with what speed does the stone strike the ground b)how long is the stone in the air c)sketch a position vs time graph for the stone

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0This is what I did \[\frac{ 69 m/s +0 m/s}{ 2 }(14 s) =Deltax\]

carolinar7
 one year ago
Best ResponseYou've already chosen the best response.0for the second question part b
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.