Question

A bird is at a point P (4.-1.-5) and sees two points P, (-1,-1,0) and P, (3.-1, -3). At time t = 0. it starts flying with a constant speed of 10 m/s to be in line

A bird is at a point ( P(4,-1,-5) ) and sees two points ( P_{1}(-1,-1,0) ) and ( P_{2}(3,-1,-3) . ) At time ( t=0, ) it starts flying with a constant speed of ( 10 mathrm{m} / mathrm{s} ) to be in line with points ( mathrm{P}_{1} ) and ( mathrm{P}_{2} ) in minimum possible time t. Find ( t ), if all coordinates are in kilometers.

JEE/Engineering Exams

Maths

Solution

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A bird is at a point P (4.-1.-5) and sees two points P, (-1,-1,0) and P, (3.-1, -3). At time t = 0. it starts flying with a constant speed of 10 m/s to be in line with points P and P.

Answer: 100 Sec. Check the explanation given above.