Unit 2(Q2)

Question 1

The point at which the entire mass of a body can be
considered to be concentrated.

Answer 1

Center of mass

Question 2

The point that represents the average position of all
the geometric points (length, area, or volume) of a uniform shape.

Answer 2

Geometric Center (Centroid)

Question 3

It is the quantity of motion of a moving body, measured
as a product of its mass and velocity.

Answer 3

Momentum

Question 4

Formula of momentum

Answer 4

P=mV

Question 5

The total momentum of a system of particles is the
vector sum of the individual moment.

Answer 5

Momentum of a System

Question 6

This total momentum is equivalent to the momentum
of a single particle of mass 𝑀 (

Answer 6

Momentum and Center of Mass

Question 7

Formula of Momentum and Center of Mass

Answer 7

P=MV

Question 8

The sum of all external forces acting on the system
equals the change in the system’s total momentum over
time.

Answer 8

Momentum and Net External Force

Question 9

is the effect of a force acting over a period of
time

Answer 9

Impulse

Question 10

It states that the impulse applied to an object is equal
to the object’s change in momentum

Answer 10

Impulse-Momentum Theorem

Question 11

It is a type of a collision where both momentum and
kinetic energy are conserved.

Answer 11

Elastic Collision

Question 12

It is a type of a collision where momentum is
conserved but kinetic energy is not (some is lost as heat,
sound, or deformation).

Answer 12

Inelastic Collision

Question 13

It measures how “bouncy” a collision is.

Answer 13

Coefficient of Restitution in Collisions(𝒆)

Question 14

Formula of Coefficient of Restitution in Collisions(𝒆)

Answer 14

e=v2f-v1f/v1i-v2i

Question 15

e=1

Answer 15

Perfectly elastic

Question 16

e is better 0.1 to 0.9

Answer 16

Partially inelastic

Question 17

e=0

Answer 17

Inelastic

Question 18

It states that the total momentum before an interaction,
is equal to the total momentum afterward, as
momentum is neither created nor destroyed but rather
transferred between objects.

Answer 18

Law of Conservation of Momentum

Question 19

∆𝒑𝒊= ∆𝒑𝒇
𝒎𝟏𝒗𝟏𝒊+𝒎𝟐𝒗𝟐𝒊= 𝒎𝟏𝒗𝟏𝒇 +𝒎𝟐𝒗𝟐𝒇

Answer 19

Law of Conservation of Momentum

Question 20

of two vectors A and B is defined as
the scalar value A.B cosθ, where θ is the angle
between them.

Answer 20

The dot product

Question 21

is done when a force is applied to an object,
and the object moves in the direction of the force.

Answer 21

Work

Question 22

Theta=0

Answer 22

1

Question 23

Theta=0-89

Answer 23

Is positive

Question 24

Theta=90

Answer 24

0

Question 25

Theta=180

Answer 25

Is -1

Question 26

It is the energy an object has because of its position in a gravitational field.

Answer 26

Gravitational Potential Energy

Question 27

is the energy stored in an elastic object (like a spring or rubber band) when it is stretched or compressed from its natural length

Answer 27

Elastic Potential Energy (EPE)

Question 28

It's a type of force where the work done is independent of the path taken, depending only on the initial and final positions of an object.

Answer 28

Conservative force

Question 29

(G)Vertical change in hight

Answer 29

Path independence

Question 30

(G) is Zero: If an object ends up where it started, the net work done by gravity is zero.

Answer 30

Closed Path Net Work

Question 31

: The net work done on an object is equal to its change in kinetic energy.

Answer 31

Work-Energy Theorem

Question 32

The rate at which work is done or energy is transferred.

Answer 32

Power

Question 33

Rate at which Work is done

Answer 33

Power

Question 34

Push or pull that can cause an object to move

Answer 34

Force