A Single Constant 10-Pound Force F₁ Acts on a Body

Multiple Choice

A single constant 10-pound force F₁ acts on a body, causing it to accelerate. Then, while F₁ continues to act, a second constant force F₂ is applied to the body, which comes to a momentary stop. The magnitude of F₂ is

A) zero.
B) a bit less than 10 pounds.
C) exactly 10 pounds.
D) larger than 10 pounds.
E) There is not enough information to tell.