- #1

the7joker7

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## Homework Statement

The force shown in the force vs time diagram in Figure P6.11 acts on a 1.5 kg object. Find the impulse of the force, the final velocity of the object if it is initially at rest, and the final velocity if initial velocity is -2.00 m/s.

http://books.google.com/books?id=wD...x_cOMU0&sig=cqAzhugYbnZdpBwdwDdlRM82s1g&hl=en

## Homework Equations

V[tex]^{2}[/tex] = V[tex]_{0}[/tex][tex]^{2}[/tex] + 2a[tex]\Delta[/tex]x

## The Attempt at a Solution

I know impulse is just 8 Newton seconds, and i know that's the right answer. But the 2nd question is getting me.

V[tex]^{2}[/tex] = 0 + 2(2/1.5)(5) gives V[tex]^{2}[/tex] = 13.33. so v = 3.65.

But the answer is v = 5.3.

Where did I go wrong?