Question

A bird is at a point P( 4, - 1, - 5) and sees two point P1( - 1, - 1, 0) and P2( 3, - 1, - 3) at time T = 0, it starts flying with constant speed of 10 metre per second to be in a line with pointsP1 and P2 in minimum possible time t. Find t, if all the coordinates are in kilometers.Plzzz

Answer 1

Answer:

100 sec...............