Question

Which of the following is/are equal to the change in momentum of an object?

• A. The product of force and time.
• B. The product of mass and acceleration of the object.
• C. The product of mass and velocity of the object.
• D. The product of velocity and time.

Answer 1

The correct option is A The product of force and time.

The mathematical form of Newton's second law of motion is
$F=\frac{mv-mu}{t}$
where $u$ and $v$ are the initial and final velocity, respectively.

We can rewrite this as
$Ft=mv-mu$
which is the change in momentum.

Hence, the change in momentum is equal to the product of the force and the time of action.