Question

Flying a bird is an example of ____________

(a) Collinear vector

(b) Multiplication of vector

(c) Addition of vector

(d) Composition of vector

The question was asked in a job interview.

I would like to ask this question from Scalar and Vector in section Laws of Motion of Engineering Physics I

Answer 1

Right option is (d) Composition of vector

Easy explanation: When a bird flies, it pushes the air with force in the downward direction with its wings. In accordance with Newton’s law of motion, the air exerts equal and opposite reaction. According to the parallelogram law, the resultant of the reaction acts on the birds in the upward direction and helps the bird to fly upwards.