Solving for Acceleration using V^2=V0^2+2a(x-x0)

[tball665]

1. A hockey puck has an initial velocity of 49 m/s and a final velocity of 35 m/s. If it travels 25 m during this time, what is the acceleration?


2. V^2=V0^2+2a(x-x0)



3. I can't even begin the above equation because I don't know what my velocity is. I tried putting my final velocity in the above equation as V^2 and got -.28 m/s^2. It was wrong. I am assuming that is not how the equation is supposed to be used. Please help!

 

[tiny-tim]

welcome to pf!

hi tball665! welcome to pf!

(try using the X² and X₂ buttons just above the Reply box )

V is the final velocity, and V_o is the initial velocity

 

[lodovico]

since (X-X₀) is 25-0

you can move variables around and solve for a