Question

A bullet of mass \(\rm 8 g\) moving with velocity \(\rm 400 ms^{-1}\) gets embedded in a freely suspended wooden block of mass \(\rm 800 g\). What is the velocity acquired by the block?

Answer 1

I keep getting \(\rm 4 ms^{-1}\) but my course module says it's \(3.96 \rm ms^{-1}\).

Answer 2

@Mashy

Answer 3

momentum conservation

8 X 400 = 808 X (velocity of wooden block)

Answer 4

you forgot to consder the masss of the bullet in the wooden block :P

Answer 5

OMG, wait...

Answer 6

Let me try that.

Answer 7

I'm a newb. Thanks!

Answer 8

newb? :O.. you have 99 smartscore

Answer 9

Yeah. SmartScore is just a number. No wait, SmartScore is a word.

Answer 10

:P