Question

A bullet of mass 100 g is fired at velocity of
100 ms - into a wooden block of mass 900 g. If
the bullet gets embedded into the block, then the
velocity of the system is
1) 20 ms -1
2) 10 ms
3) 0.1 ms
4) 100 ms​

Answer 1

Answer:

m1=0.1kg,u1=100m/s,m2=0.9kg, u2=0

m1u1+m2u2=(m1+m2)v

0.1*100+0.9*0=(0.1+0.9)v

10=1*v

v=10m/s

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