Question

5. Determine the momentum of a system of the two objects. One object, m1, has a mass of1.4 kg and a velocity of 9 m/s towards the south and the second object, m2, has a massof 2.6 kg and a velocity of 10 m/s towards the north. What is the magnitude anddirection of the momentum of the system?

Answer 1

Asumming north is positive and north negative:

m1= 1.4 kg

v1= -9 m/s

m2= 2.6 kg

v2= 10 m/s

P =momentum = m*v

P system = m1v1 + m2v2

P system = 1.4 (-9) + 2.6 (10) = -12.6 + 26 = 13.4 kgm/s ( north )