Laws Of Motion Question 168

Question: If a bullet of mass 5 gm moving with velocity 100 m /sec, penetrates the wooden block upto 6 cm. Then the average force imposed by the bullet on the block is [MP PMT 2003]

Options:

A) 8300 N

B) 417 N

C) 830 N

D) Zero

Show Answer

Answer:

Correct Answer: B

Solution:

u=100 m/s, v=0, s=0.06 m Retardation =a=u22s=(100)22×0.06=1×10612

Force =ma=5×103×1×10612=500012=417 N



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