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A 0.15\ \text{kg}0.15 kg0, point, 15, space, start text, k, g, end text baseball flies rightward at 15\ \dfrac{\text m}{\text s}15
s
m

15, space, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction to hit a tennis ball flying at it from the opposite direction at 22\ \dfrac{\text m}{\text s}22
s
m

22, space, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction. The baseball and the tennis ball have final speeds of 1.2\ \dfrac{\text m}{\text s}1.2
s
m

1, point, 2, space, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction and 13\ \dfrac{\text m}{\text s}13
s
m

13, space, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction, respectively, both to the right.
What is the mass of the tennis ball?


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