helloadbiufbisa123 helloadbiufbisa123

02-06-2021
Physics

contestada

A bullet of m=30g reaches 900m/s in a 550mm long gun barrel. What total energy does the bullet have upon exiting the gun? *
A)12150000J
B)810000J
C)12150J
D)14850000J

show your work please

Respuesta :

machmillerg machmillerg

02-06-2021

Answer:

C)12150J

Explanation:

KE = (1/2)(m)(v²)

KE = .5*30g(1kg/1000g)*(900m/s)²

KE = 12,150J

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