answer
v = 4.2[tex]\frac{m}{s}[/tex]
set up an equation
we can use the formula for kinetic energy since we know mass and kinetic energy
K = [tex]\frac{mv^{2}}{2}[/tex]
v = [tex]\sqrt{\frac{2K}{m} }[/tex]
values
K = 0.013 J
m = 1.5g = 0.0015 kg
plug in values
v = [tex]\sqrt{\frac{2*0.013}{0.0015} }[/tex]
v = 4.2[tex]\frac{m}{s}[/tex]
