# Homework Help: Magnitude of the impulse

1. Nov 15, 2008

### blayman5

1. The problem statement, all variables and given/known data
A ball of mass 0.4 kg is initially at rest on the
ground. It is kicked and leaves the kicker’s
foot with a speed of 5.0 m/s in a direction 60◦
above the horizontal.
The magnitude of the impulse k~Ik imparted
by the ball to the foot is most nearly

3. The attempt at a solution

I=change(p)
pf-pi
mvf-mvi
(0.4)(5cos60)-(0.4)(0)
=1 N*s
Where did I go wrong in the problem?

2. Nov 15, 2008

### Elbobo

Re: Impulse

WOW how weird we posted the same problem near the same time as each other

Do you go to Bellaire by any chance?

(BTW check my topic, I'm not sure I'm right but I did it differently than you)

3. Nov 15, 2008

### blayman5

Re: Impulse

Ha, that's really weird. No, I go to Connally. I don't know if the angle would matter or if it just would be the velocity itself. I got it wrong when I did it.

4. Nov 15, 2008

### Elbobo

Re: Impulse

Ok, I was right, just ignore the angle :D

5. Nov 15, 2008

Re: Impulse

Ok, thanks!