A Motorcycle with a Mass of 100 Kilograms, Slowly Rolls

Multiple Choice

A motorcycle with a mass of 100 kilograms, slowly rolls over the edge of a cliff and falls for three seconds before it reaches the bottom of a gully. Its momentum ( in units of kilogram meters per second) just before it hit bottom and became burned rubber and scrap metal was

A) 1,000.
B) 4,000.
C) 3,000.
D) 9,000.
E) 2,000.