Question

A bird moves from point (1,-2) to (4,2).If the speed of the bird is 10m/sec . then the velocity vector of bird is?

Answer 1

We have given speed=10m/s direction is (1,-2) to (4,2) there fore direction will be =(4-1,2+2)=(3,4) hence the direction of unit vector is (3/5,4/5) now multiplying by magnitude 10m/s we get velocity vector as v=10 * (3/5,4/5) v=6i+8j this will be the velocity vector