Question

two insect A( -3,2,0) and B(1,1,-3) fly towards a point C(0,2,0) at the same speed.which will arrive first

Answer 1

Answer

For A insect distance

$r_A=C-A=3i$

So magnitude r_A=3m

For B insect distance

$r_B=C-B=-i+j+3k$

So magnitude of distance

r_B=$\sqrt{11}=3.32m$

So insect A reaches first at point C.