Answer:
\[{{V}_{B}}={{V}_{w}}=V=?\] \[\therefore V=\frac{{{m}_{B}}{{u}_{B}}+{{m}_{w}}{{u}_{w}}}{{{m}_{B}}+{{m}_{w}}}=\frac{ab+0}{a+c}=\frac{ab}{a+c}\] Bullet (B) Wood (w) \[{{m}_{B}}=a\] \[{{m}_{w}}=c\] \[{{u}_{B}}=b\] \[{{u}_{w}}=0\]
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