Module 7 Flashcards
It is a position relative in an object or system, wherein it is the average position of all parts of that object or system, which are weighted according to their collective masses. It shows where the object or system focus its entire mass on.
center of mass
The regular solid figures all have their centers of mass located at the ___.
centroid
It is the amount of motion that an object has. Meaning, if an object is moving, it has ___ as well, kind of like moving inertia. It is also referred as mass in motion. If an object has mass, then it has ___.
Momentum
_ is the standard symbol used for momentum.
p
What are the 2 components of momentum?
velocity and mass
Momentum is a ___ value.
vector
The unit for momentum is ___.
𝑘𝑔 ∙ 𝑚/𝑠
___, written symbolically as 𝐽, is what we call force in time. It is usually associated with momentum because they share the same relationship.
Impulse
This theorem states that an applied impulse is equal to a change in momentum in a given system.
Impulse – Momentum Theorem
It is the measurement used in determining the efficacy of rocket propellants. It is widely used in rocket science.
Specific impulse
It is best defined as the brief, simultaneous interaction between two or more bodies, which is due to the internal force acting between the bodies. It involves energy, force, velocity, momentum, and impulse. As such, this is the direct application of momentum and impulse that involves forces, mass, and velocity.
Collision
This is a Conservation Law wherein momentum is a constant in all things that have mass.
The Law of Conservation of Momentum
[type of collision]
It is defined as a type of collision where the concerned bodies conserve both energy and momentum upon contact with each other.
Elastic collision
[kind of elastic collision]
It is not a perfect collision.
contact collision
[kind of elastic collision]
It is a kind of elastic collision where the objects interact with each other, even without direct contact. It is an almost perfect collision.
noncontact collision
[setups of elastic collision]
It is the type of elastic collision where the projectile is moving directly along a straight line. The target, upon colliding with the projectile, will then move in the direction the projectile is moving at.
Head-on collision
[setups of elastic collision]
It is the type of collision where the projectile hits the target at a certain angle, in which the resulting angle after impact is dependent on the masses of the given objects in collision.
non-head-on collision
It is a collision in which if the target does not bend to the force generated by the incoming projectile, the said target will move alongside the already-moving object, or the two interacting objects will stick together, if enough force and momentum is generated.
Inelastic Collision
Inelastic collision also has a coefficient in it, called the ___. This coefficient shows the ratio between objects before and after impact.
coefficient of restitution
