Physics

Problem

2.0\,\text{kg}

space probe is travelling

10\,\text{m/s}

due east. A first thruster firing changes its velocity to

8.0\,\text{m/s}

due north. A second firing then gives it a velocity of

6.0\,\text{m/s}

directed

45^{\circ}

south of west. What is the magnitude of the total change in momentum produced by the two firings? a)

25.6\text{ kg\,m/s}

32.0\text{ kg\,m/s}

29.7\text{ kg\,m/s}

14.9\text{ kg\,m/s}