ch09-p031 - 31. We use coordinates with +x rightward and +y...

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() ( ) ( ) 3.00 90 3.60 215 5.86 59.8 . fi Jp p p =Δ = = ∠ ° − ° = ° G GG G (a) The magnitude of the impulse is 5.86 kg m/s 5.86 N s = . (b) The direction of J G is 59.8° measured counterclockwise from the + x axis. (c) Eq. 9-35 leads to 3 avg 3 5.86 N s 5.86 N s 2.93 10 N. 2.00 10 s JF t F = ¡ =≈ × × We note that this force is very much larger than the weight of the ball, which justifies our (implicit) assumption that gravity played no significant role in the collision.
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