+0  
 
+1
325
2
avatar+945 

In Algebra, you drop a penny from a height of 16 feet. After how many seconds does the penny land on the ground? Formula: h = -16t^2 + vt + s

GAMEMASTERX40  Mar 7, 2018

Best Answer 

 #1
avatar+12727 
+2

Assuming no friction or terminal velocity:

 

h = 0 when it hits the ground     find t

0 = 16t^2+vt + s       v = 0  as you drop it     and s= 16 at the starting point

0= -16t^2 + 16

-16 = - 16t^2

1= t^2                t=1 sec

ElectricPavlov  Mar 7, 2018
edited by ElectricPavlov  Mar 7, 2018
 #1
avatar+12727 
+2
Best Answer

Assuming no friction or terminal velocity:

 

h = 0 when it hits the ground     find t

0 = 16t^2+vt + s       v = 0  as you drop it     and s= 16 at the starting point

0= -16t^2 + 16

-16 = - 16t^2

1= t^2                t=1 sec

ElectricPavlov  Mar 7, 2018
edited by ElectricPavlov  Mar 7, 2018
 #2
avatar+945 
+3

Thanks so much! This question got me stuck.

GAMEMASTERX40  Mar 7, 2018

8 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.