The two things which determine an object’s momentum are mass and velocity, therefore the correct answer is option B.
What is momentum?
It is the combined effect of a particle's mass and velocity, and it can be defined as the product of these two quantities. Any particle's momentum is expressed in kilograms per second (Kg/s).
Mathematically the formula of the momentum is
P = mv
where P is the momentum of the particle
m is the mass of the particle
v is the velocity by which the particle is moving
The rate of change of momentum is directly proportional to the applied force, for example, a tennis ball is much lighter than a cricket ball. Consider throwing a tennis ball and a cricket ball at the same velocity. It will be discovered that more force is needed to stop the heavier cricket ball and less force is needed to stop the lighter tennis ball. As a result, we can assert that a moving body's mass directly determines the amount of force needed to stop it.
Thus, The correct answer is option B because mass and velocity are the two factors that determine an object's momentum.
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