A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 10³N, calculate the speed of the bullet just before it hits the wooden block.

450ms^-1

400ms^-1

300ms^-1

250ms^-1

Correct Option

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2 years ago

Question looks tough but it isn't actually

1 year ago

or you use energy
WD = F×S
wd = 7.5×10^3 ×0.15
wd = 1125J

E =1/2mv2
1125 = 1/2(0.025)v²
2250/0.025 = v²
v = 300m/s

ceoofwahala

20th June, 2026

Chemistry

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ASSAAS

20th June, 2026

English Language

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infinitehoaxx

21st May, 2026

Computer

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A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 103N, calculate the speed of the bullet just before it hits the wooden block.