Impulse and momentum 222, and 2For a single constant force: xxyyxypmp m p mppm mKmJFdtJ Ftυυυ=⇒====+==Σ=Δ∫GGGGGGImpulse-momentum equation 12121211For a single constanr force: xxyy22xxxypJpmJmmmFtmmFtmxy+=⇒⎧⎪+= ⇒⎨⇒⎪⎩⇒+Δ=⎧⎪⎨⇒+Δ=⎪⎩GExample – Impact A 0.15 Kg baseball is traveling with a velocity of m/s just before impact with the bat. Immediately after the impact, the velocity of the baseball is detected to be m/s. When struck by the bat, the baseball is in contact with the bat for 5 ms. Find (a) the x- and y- components of the impulse by the bat on the baseball during impact, and (b) the x- and y- components of the average impact force by the bat on the baseball. ˆ40 5 i−−ˆjˆjˆ55 25 i+(Ans: (a) Jx= 14.25 Ns, Jy= 4.5 Ns (b) Fx= 2850 N,
This is the end of the preview. Sign up
access the rest of the document.