Module 7

Question 1

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.

Answer 1

center of mass

Question 2

The regular solid figures all have their centers of mass located at the ___.

Answer 2

centroid

Question 3

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 ___.

Answer 3

Momentum

Question 4

_ is the standard symbol used for momentum.

Answer 4

p

Question 5

What are the 2 components of momentum?

Answer 5

velocity and mass

Question 6

Momentum is a ___ value.

Answer 6

vector

Question 7

The unit for momentum is ___.

Answer 7

𝑘𝑔 ∙ 𝑚/𝑠

Question 8

___, written symbolically as 𝐽, is what we call force in time. It is usually associated with momentum because they share the same relationship.

Answer 8

Impulse

Question 9

This theorem states that an applied impulse is equal to a change in momentum in a given system.

Answer 9

Impulse – Momentum Theorem

Question 10

It is the measurement used in determining the efficacy of rocket propellants. It is widely used in rocket science.

Answer 10

Specific impulse

Question 11

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.

Answer 11

Collision

Question 12

This is a Conservation Law wherein momentum is a constant in all things that have mass.

Answer 12

The Law of Conservation of Momentum

Question 13

[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.

Answer 13

Elastic collision

Question 14

[kind of elastic collision]
It is not a perfect collision.

Answer 14

contact collision

Question 15

[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.

Answer 15

noncontact collision

Question 16

[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.

Answer 16

Head-on collision

Question 17

[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.

Answer 17

non-head-on collision

Question 18

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.

Answer 18

Inelastic Collision

Question 19

Inelastic collision also has a coefficient in it, called the ___. This coefficient shows the ratio between objects before and after impact.

Answer 19

coefficient of restitution