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March 24th, 2017, 04:10 AM  #1 
Senior Member Joined: Jan 2017 From: US Posts: 120 Thanks: 6  Algebra Velocity Problem If a bullet is shot straight up with an initial velocity of 48 feet per second, its height s after t seconds is given by the equation s = 16t^2+ 48t. Solve for the time it takes for the bullet to return to the ground. Show your work and explain the steps you used to solve. 
March 24th, 2017, 05:10 AM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 2,585 Thanks: 1430 
set $s=0$ and solve for $t$

March 24th, 2017, 07:43 AM  #3 
Newbie Joined: Mar 2017 From: VietNam Posts: 7 Thanks: 2 
Set s=0 to find t, with condition t>0. We can easy to see that t=3. 

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algebra, problem, velocity 
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