Physics formulas

Question 1

What is the linear motion equation without displacement?

Answer 1

v_f = v₀ + at

Question 2

What is the linear motion formula without final velocity?

Answer 2

x = v₀t + ½at²

Question 3

What is the linear motion formula without time?

Answer 3

v² = v₀² + 2ax

Question 4

What is the formula for average velocity when given displacement and time?

Answer 4

Question 5

What is the formula for average velocity when given initial and final velocity?

Answer 5

Question 6

What is the formula for acceleration?

Answer 6

Question 7

What is the definition of a vector?

Answer 7

Physical quantities with both magnitude and direction, such as force and velocity

Question 8

What is the definition of a scalar?

Answer 8

Physical quantities that have magnitude but no direction

Question 9

What is acceleration?

Answer 9

The rate of change of an objects velocity

Question 10

What is the formula for displacement when given average velocity and time?

Answer 10

Question 11

What is the formula for displacement given initial velocity, final velocity, and time?

Answer 11

Question 12

What is static friction?

Answer 12

The force that must be overcome to set an object in motion

Question 13

What is the definition of kinetic friction?

Answer 13

Kinetic friction opposes the motion of objects moving relative to each other

Question 14

What is the formula for kinetic friction?

Answer 14

Question 15

Newtons first law of motion:

Answer 15

A body in a state of motion or at rest will remain in that state unless acted upon by a net force

Question 16

What is the definition of Newtons second law of motion?

Answer 16

What a net force is applied to a body of mass, the body will be accelerated in the same direction as the force applied to the mass.

Question 17

What is the formula for Newtons second law of motion?

Answer 17

F = ma

Question 18

What is Newtons third law of motion?

Answer 18

If body A exerts a force on body B, then B will extert a force back onto A that is equal in magnitude and opposite in direction.

Question 19

Definition of mass:

Answer 19

A scalar quantity that measures a body’s intertia

• Represented by m
• measured in kg

Question 20

What is weight?

Answer 20

A vector quantity that measures a body’s gravitational attraction to earth

Question 21

In order for an object to be in equilibrium…

Answer 21

The sum of opposing forces acting on the obkect must be equal to 0

Question 22

What is the term and formula on a constant force acting on an object that moves a displacement?

Answer 22

Work

Question 23

What is the formula for centripetal acceleration?

Answer 23

Question 24

What is the formula for centripetal force?

Answer 24

Question 25

When work is done by the system what is work positive or negative?

Answer 25

When work is done by the system work is greater than 0 (+)

Question 26

Power: - Definition - Formula

Answer 26

- The rate at which work is performed

Question 27

Kinetic energy: Definition

Answer 27

The energy associated with moving objects

Question 28

Kinetic energy: Formula

Answer 28

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Question 29

Potential energy: Definition

Answer 29

The energy associated with a body's position (U)

Question 30

Gravitational potential energy: Formula

Answer 30

U = mgh

Question 31

What is the formula for total mechanical energy?

Answer 31

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Question 32

What is the work-energy theorem?

Answer 32

It relates the work performed by all forces acting on a body in a particular time interval to the change in energy at that time. ![]()

Question 33

Conservation of energy: Definition and Formula

Answer 33

When there are no nonconservative forces (such as friction) acting on a system, the total mechanical energy remains constant ![]()

Question 34

Linear expansion:

Answer 34

The increase in length by most solids when heated

Question 35

Conduction:

Answer 35

The direct transfer of energy via molecular collisions

Question 36

Convection:

Answer 36

The transfer of heat by the physical motion of fluid

Question 37

Radiation:

Answer 37

The transfer of energy by electromagnetic waves

Question 38

What does the value of Q mean

Answer 38

When Q is greater than 0 it means that heat is gained when Q is less than 0 it means that heat is lost

Question 39

Heat of transformaion:

Answer 39

The quantity of heat required to change the phase of 1g of a substance

Question 40

First law of thermodynamics

Answer 40

Question 41

In an adiabatic process when Q = 0 the first law becomes

Answer 41

Question 42

When the process has a constant volume (W=0) the first law becomes

Answer 42

Question 43

When the process is isothermal the first law becomes

Answer 43

Q = W

Question 44

What is the second law of thermodynamics?

Answer 44

In any thermodynamic process that moces from one state of equilibrium to another, the entropy of the system and environment together will either increase or remain unchanged

Question 45

What is the formula for density?

Answer 45

Question 46

Specific Gravity formula

Answer 46

no units

Question 47

Definition of pressure:

Answer 47

A scalar quantity defined as force per unit area

Question 48

Formula and unit for pressure

Answer 48

Pascan N/m²

Question 49

Definition of absolute pressure

Answer 49

The absolute pressure in a fluid is due to gravity somewehre below the surface

Question 50

Formula for absolute pressure

Answer 50

Question 51

Gauge pressure formula

Answer 51

Question 52

Continuity equation (fluids)

Answer 52

Question 53

Bernoulli's equation

Answer 53

Question 54

Archimede's principle

Answer 54

Question 55

What is the buoyant force equal to?

Answer 55

The buoyant force is equal to the eright of the displaced fluid

Question 56

if the weight of the fluid displaced is less than the objects weight then the object will...

Answer 56

Sink

Question 57

If the weight of the fluid displaced is greater than or equal to the objects weight than the object will...

Answer 57

Float

Question 58

Pascal's principle definition:

Answer 58

A change in the pressure applied to an enclosed fluid is transmitted undimished to every portion of the fluid and to the walls of the containing vessel

Question 59

Formulas associated with Pascal's principle

Answer 59

Question 60

What happens to a postive point charge in an electric field?

Answer 60

In an electric field a positive point charge will move in the same direction as the electric field vector

Question 61

What happens to a negative point charge in an electric field?

Answer 61

A negative point charge in an electric field will move in the opposite direction as the electric field vector

Question 62

Coulomb's law Definition:

Answer 62

A law that states that like charges repel and opposite charges attract, with a force proportional to the product of the charges and inversely proportional to the square of the distance between them.

Question 63

Coulomb's law Formula:

Answer 63

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Question 64

When two oppositely charged parallel plates are separated by a distance an electrical field is created, and the potential difference that exists between these plates is given by the formula..

Answer 64

V = Ed