As Shown in the Figure, a Bullet of Mass 0

Multiple Choice

As shown in the figure, a bullet of mass 0.010 kg moving horizontally suddenly strikes a block of wood of mass 1.5 kg that is suspended as a pendulum. The bullet lodges in the wood, and together they swing upward a vertical distance of 0.40 m. The length of the string is 2.0 m. What was the speed of the bullet just before it struck the wooden block?

A) 67 m/s
B) 250 m/s
C) 370 m/s
D) 420 m/s
E) 650 m/s