Question 657324
First one's distance:
{{{ d[1] = 3.5*12 }}}
{{{ d[1] = 42 }}} m
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2nd one's distance:
{{{ d[2] = 4*12 }}}
{{{ d[2] = 48 }}} m
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{{{ d[2] - d[1] = 48 - 42 }}}
{{{ 48 - 42 = 6 }}}
They are 6 m apart after 12 sec