[问答题]
Sketch the free-body diagram of a baseball (a;x)0jxmblaxf uwr6u o6 l 0hu8-kxy28) at the mo mf8(m15 o(q z(4rjjlxi49eoitti rz+ment it is hit by the bat, and again (b) after it has left the bat and is flying toward the o1o9i q4z5(8 jzilt f( m4 +xtmr(erjioutfield.
