A 12-G Bullet Moving Horizontally Strikes and Remains in a 3.0-Kg

Multiple Choice

A 12-g bullet moving horizontally strikes and remains in a 3.0-kg block initially at rest on the edge of a table. The block, which is initially 80 cm above the floor, strikes the floor a horizontal distance of 120 cm from its initial position. What was the initial speed of the bullet?

A) 0.68 km/s
B) 0.75 km/s
C) 0.81 km/s
D) 0.87 km/s
E) 0.41 km/s