A 1.31 kg particle has a velocity of vx = 4.77 m/s and vy = 3.56 m/s.

Question

Find the magnitude of its total momentum. Answer in units of kg · m/s'?

Answer 1

The velocity in X-direction   V_x  = 4.77 m/s .

The velocity in Y-direction   V_y  = 3.56 m/s .

Resultant  velocity is  

V = 5.95 m/s

So, the resultant velocity is 5.95 m/s .

Momentum = Mass * Velocity .

Mass of the body is 1.31 kg .

Momentum = 1.31 * 5.95

                 = 7.794  kg-m/s .

So , the momentum is 7.794  kg-m/s .