January 25th, 2017, 11:07 AM  #1  
Member Joined: Feb 2014 Posts: 91 Thanks: 1  Calculating the Acceleration
So I'm stuck on another homework problem. Quote:
 
January 25th, 2017, 11:32 AM  #2 
Senior Member Joined: Sep 2015 From: USA Posts: 2,366 Thanks: 1272 
you can always write $s(t) = \dfrac {a t^2}{2} + v_0 t + s_0$ $v(t) = a t + v_0$ so if you are given a time $T$ and distance $D$ you can write $s_0=0,~s(T)=D$ $0 = a T + v_0$ $v_0 = a T$ and substituting this back in $s(t) = \dfrac {a t^2}{2} + (a T) t $ $s(T) = \dfrac {a T^2}{2} + (a T) T$ $D = \dfrac {a T^2}{2}$ $a = \dfrac{2 D}{T^2}$ $v_0 =  a T = \dfrac{2 D}{T}$ and you can plug your values in Last edited by romsek; January 25th, 2017 at 11:54 AM. 
January 25th, 2017, 11:36 AM  #3  
Math Team Joined: May 2013 From: The Astral plane Posts: 2,073 Thanks: 842 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
$\displaystyle x  x_0 = \frac{1}{2} (v  v_0) t$ Solve for $\displaystyle v_0$. Can you finish? Dan  

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acceleration, calculating 
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