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Physics

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Physics

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37 Terms

1

Physics

It is defined as the science that deals with matter and energy and their interactions.

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2

Matter

It is simply defined as anything that occupies space and has mass.

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3

Energy

It is defined as the capacity of doing work.

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4

Accuracy

It refers to the closeness of a measurement to the accepted value for a specific physical quantity.

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5

Precision

It is the agreement among several measurements that have been made in the same way or it is the closeness of measured values to each other.

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6

Random Error

This type of error occurs when there are variations in the environment or measurement technique.

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7

Systematic Error

This type of error is caused by faulty instruments or the incorrect handling of instruments or incorrect calibration of measuring instruments.

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8

Scalar

Quantities that can be associated with the magnitude only.

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9

Vector

Quantities that can be associated with  both magnitude and direction.

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10

Geometrical Method

Vectors may be added graphically or analytically. The graphical method, which is also known as ______, requires no computation.

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11

Resultant

Addition of vectors is equivalent to composition of vectors, and the sum of vectors is called the ______ of vectors.

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12

Position Vector

Starting from the origin to the point where the particle is.

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13

Velocity Vector

Time derivative of the corresponding component of the position vector.

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14

Acceleration Vector

Derivative of the x-component of the velocity vector as a function of time.

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15

Mechanics

Forces acting on bodies.

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16

Kinematics

Motion of a body.

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17

Dynamics

Relates force and motion.

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18

Displacement

It refers to the change of position of an object. It is described by its magnitude and direction; hence, it is a vector quantity.

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19

Displacement

Difference between final position to initial position.

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20

Meter

The SI unit for displacement is ______.

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21

Distance

The absolute value of displacement is called ______.

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22

Average Velocity

It is the displacement divided by the time of travel.

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23

Speed

The absolute value of velocity is called ______.

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24

Instantaneous Velocity

It is the velocity at a specific instant of time or specific point along the path.

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25

Acceleration

It is the rate at which velocity changes.

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26

Instantaneous Acceleration

It is the acceleration at a specific instant of time.

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27

Average Velocity

Rate at which an object changes in position from one place to another.

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28

Instantaneous Velocity

Rate at which an object changes its position from one place to another.

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29

Translation

It is the term used in physics for motion in a straight line.

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30

Position

The location of an object with respect to a frame of reference.

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31

Projectile

It is a body which is given an initial velocity and then allowed to move under the influence of gravity only.

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32

Trajectory

Once a projectile is released, it will trace a curvilinear (non-linear) path called ______.

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33

Projectile Motion

It is a combination of horizontal motion with constant velocity and vertical motion with constant acceleration.

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34

Free Fall

Motion under sole influence of a gravitational acceleration.

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35

Circular Motion

An object that moves in a circle at constant speed v is said to be experiencing a uniform circular motion.

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36

Angular Displacement

The angle in radians (degrees, revolutions) through which a point or line has been rotated in a specified sense about a specified axis.

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37

Angular Velocity

It can be considered to be a vector quantity, with direction along the axis of rotation in the right-hand rule sense.

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