A 0400-Kg Ball Approaches a Very Massive Wall at 20

Multiple Choice

A 0.400-kg ball approaches a very massive wall at 20.0 m/s perpendicular to wall and rebounds with 70.0% of its initial kinetic energy. What is the magnitude of the change in momentum of the wall?

A) 14.7 kg∙m/s
B) 13.6 kg∙m/s
C) 2.40 kg∙m/s
D) 1.31 kg∙m/s
E) 0.00 kg∙m/s