© Dr. Steve Rapp, 2004

Solution

uSince the masses are
equal we can eliminate them from our problem.

ucos 40 = V’r/Vb
sin 40 = V’b/Vb

uV’r = cos 40
(.80 m/s) V’b = sin 40
(.80)

uV’r = .77 (.80
m/s) V’b =.64(.80 m/s)

uV’r = .62 m/s V’b = .51 m/s

mbV’b

mbVb

mrV’r

40