A 25-Kg Box of Books Is Dropped on the Floor

Multiple Choice

A 25-kg box of books is dropped on the floor from a height of 1.1 m and comes to rest.What impulse did the floor exert on the box?

A) cannot be answered without knowing how long it took the box to stop
B) 22 kg∙m/s
C) 120 kg∙m/s
D) 270 kg∙m/s
E) 540 kg∙m/s