I need help with these questions:
> A bullet is fired with an initial muzzle velocity of 500 ms^-1
a) Calculate the kinetic energy of the bullet if it has a mass of 20 grams.
b) The bullet penetrates a glass windows and is slowed down by 200 ms^-1. Calculate the residual kinetic energy and the energy that was used to break the glass.
c) What principle did you employ to calculate the energy that must have been used to break the glass?
Thank You.
2007-03-13
01:47:11
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3 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Physics