No initial Vy for either ball, so sum = 0…

By'=.3sin20=.103 must equal Ay'

Ax = Ax'+Bx'

(1)(1)=Ax'+.3cos20

Ax'=.718

tanq=.103/.718, q=8.2°

p²=.103²+.718²

p=.72 and v= .72

________________________________________________________________________

4*.2= .8

________________________________________________________________________

p=2*2=4

L=Iw=(.5mr²)(v/r)=.09*6.66= .6

________________________________________________________________________

700=.5Fsin90

F=1400N

________________________________________________________________________

700=.25Fsin45

F=3955

________________________________________________________________________

KErock è KErod

Mv²/2 = Iw²/2

Mv²=Iw²

1*4²=((2)(2²)/12)(w²)

w=4.9

L=Iw=(.666)(4.9)=3.27