# value

a bullet of mass 0.03kg enters a block of wood with a velocity 600m/s & penatrate to a depth of 0.2m .Calculate the average force of the wood to the penetration of the bullet

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1. 60000

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2. 27000

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3. change of momentum = .03*600 = 18

average speed = 300
time = .2/300

Force = change of momentum/change of time
= 18 *300/.2 Newtons
= 90*300
=27,000 agree

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4. Thanks sir

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