MOMENTUM AND COLLISIONS Flashcards
a point or position that varies according to the composition, arrangement, or movement of an object or system.
center of mass
which is a vector quantity, is proportional to both mass (m) and speed (𝑣). Its direction
is also similar to the velocity’s direction.
Momentum
Unbalanced forces cause acceleration, and a change in velocity results in a change in momentum. Thus, an object’s momentum will change when acted upon by a force for a certain amount of time. This leads us to an equally-important concept called
IMPULSE
signifies that the total momentum of a system is constant when the summation of all the external
forces acting upon that system amounts to zero
Conservation of Momentum
Newton’s Second Law suggests that the net force exerted upon an object amounts to the “time rate of change of the product of the object’s velocity and mass.” This product is also referred to as the object’s
linear momentum
Determining the center of
mass for rigid objects
such as circles, triangles,
and rectangles is
relatively simple: it is the
midpoint of the system