A Car of Mass 1200 Kg Is Driving Due South

Multiple Choice

A car of mass 1200 kg is driving due south at 40 m/s. After driving around a sharp curve, the car is moving west at 30 m/s. The change in the magnitude of the car's momentum is

A) 10 kN/s.
B) 12 kN/s.
C) 60 kN/s.
D) 70 kN/s.
E) 84 kN/s.