Friday
March 6, 2015

Homework Help: physics and math

Posted by Madison on Wednesday, October 8, 2008 at 11:42pm.

hi guys, i had the following question but i keep on getting it wrong, should i use -9.8 or 9.8 m/s2 for the acceleration? im confused and would really appreciate some help.

A student throws a set of keys vertically upward to her sorority sister, who is in a window 3.70 m above. The keys are caught 1.60 s later by the sister's outstretched hand.
(a) With what initial velocity were the keys thrown?
m/s upward

(b) What was the velocity of the keys just before they were caught?
m/s is it upwards or downwards?

thanks to anyone who can help me

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - I would really appreciate some help with this thermochemistry ...
Chemistry - The second half of the equation is how i had done on the exam but ...
Physics - Hi, I had some questions about Physics and Newton’s Three Laws of ...
Physics - Hi, I had some questions about Physics and Newton’s Three Laws of ...
BPC110 - Hello, I am trying to use APA format. I did some short answers and ...
PHYSICS - Could u help with physics hw! i keep trying but i keep getting the ...
Thank Jiskha tutors - I really appreciate all that you tutors do for us, I know ...
Physics - I really don't get why I am getting this question wrong? Please can ...
Physics - I really don't get why I am getting this question wrong? Please can ...
Physics - I really don't get why I am getting this question wrong? Please can ...

Members