Question

A particle starting from point A(1, 2) moves 2√2m
along the straight line x - y + 1 = 0. Then final position
vector of the particle is​

Answer 1

Explanation:

Correct option is B)

Since the particles move along a straight line. This means that the given coordinates lie on the line on which the particle moves.

So, we have to find the angle which this line makes with the X axis.

I.e the slope of this line which is given by tan θ

tanθ= x2-x1 y y2. -y1. =2-1 3-2.=1

∴θ= 4π

=45 degree