A Bullet of Mass 20

Multiple Choice

A bullet of mass 20. g, traveling at 350. m/s, strikes a steel plate at an angle of 30.° with the plane of the plate. It ricochets off at the same angle, at a speed of 320. m/s, as shown in Figure 6-3. What is the magnitude of the impulse that the wall gives to the bullet?
Figure 6-3

A) 4.3 N-s
B) 0.52 N-s
C) 0.30 kN-s
D) 6.7 N-s
E) 0.30 N-s