which of the following statements about momentum and impulse is NOT true?

Question

A. An object's momentum always decreases when an impulse is applied.
B. The change of momentum of an object is equal to the impulse.
C. Momentum and impulse have the same units (kgXm/s).
D. The greater the impulse, the greater the change in momentum.

Answer 1

The statement that is NOT true is:

A. An object's momentum always decreases when an impulse is applied.

This statement is incorrect because an impulse can increase or decrease an object's momentum depending on the direction of the applied force relative to the object's current motion. If the impulse is applied in the same direction as the object's momentum, the momentum will increase, not decrease.