(adsbygoogle = window.adsbygoogle || []).push({}); 1.A ball of mass 0.40kg is moving to the left at a velocity v_{0}=-20 m/s. It is kicked and given a velocity, at 45 degrees upwards to the right, of v_{f}30[/sub] m/s.

1) Find the impulse of the force

2) Find the average force

The collision time is 0.010s

2.I = (delta) P

I = F (delta)t

3.

1) before p = 0.4x-20= -8

after 30x0.4=12

Change in p = 20Ns Where do the angles some in?

2) F=(delta)P/t=2000

Which is obviously wrong. They didn't include the angles for fun, so there something wrong in my working. Do I have to choose a line to work out the momentum across? ie, linear momentum. A bit confused. Any help appreciated.

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# Homework Help: Impulse on ball involving angles

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