Physics QE

Question 1

Product of mass of the object and its velocity

Answer 1

Linear Momentum

Question 2

SI Unit of Linear Momentum

Answer 2

kg•m/s

Question 3

Forces that particle of a system exert to one another

Answer 3

Internal Forces

Question 4

Forces that is exerted to any part of the system by other objects outside the system

Answer 4

External Forces

Question 5

The system is considered to be ________ if there are no external forces acting on it

Answer 5

Isolated

Question 6

It is the basis of the Third Law of Motion

Answer 6

Conservation of Linear Momentum

Question 7

According to the Conservation of Linear Momentum, for an isolated system, the total momentum is _________

Answer 7

Conserved

Question 8

The action of driving or pushing forward

Answer 8

Propulsion

Question 9

The upward force that the exhaust gases exert on the rocket

Answer 9

Thrust Force

Question 10

Negative ratio of the relative velocity of the two colliding bodies after collision to the relative velocity before the collision

Answer 10

Coefficient of Restitution

Question 11

An interaction between two or more bodies that come in contact with each other

Answer 11

Collision

Question 12

In collision, ________________ is always conserved

Answer 12

Linear Momentum

Question 13

Type of collision where e=0

Answer 13

Perfectly Inelastic Collision

Question 14

Type of collision where e=1

Answer 14

Elastic Collision

Question 15

Type of collision where e is between 0 and 1

Answer 15

Inelastic Collision

Question 16

Used to determine the velocity of a bullet

Answer 16

Ballistic Pendulum

Question 17

Resistance to motion whenever two materials or media in contact tend to move

Answer 17

Friction

Question 18

Types of Friction

Answer 18

Sliding Friction

Rolling Friction

Question 19

Types of Sliding Friction

Answer 19

Static Friction

Kinetic Friction

Question 20

Friction is sufficient to prevent relative motion between the surfaces

Answer 20

Static Friction

Question 21

Present when there is relative motion between the surfaces in contact

Answer 21

Kinetic Friction

Question 22

Occurs when one surface rotates without sliding nor slipping

Answer 22

Rolling Friction

Question 23

The maximum angle of slope keeping an object at rest

Answer 23

Angle of Repose

Question 24

The angle of slope in which the object is in constant velocity

Answer 24

Angle of Uniform Slip

Question 25

His idea was that motion is classified into two types which are Natural and Violent Friction

Answer 25

Aristotle

Question 26

Every object has a proper place determined by its nature

Answer 26

Natural Motion

Question 27

Pushing or pulling forces

Answer 27

Violent Motion

Question 28

His idea was that the natural tendency of an object is to continue moving and no force is needed to keep it moving

Answer 28

Galileo

Question 29

Ability to resist any changes in motion

Answer 29

Inertia

Question 30

Said that moving object needs a steady force to keep it moving

Answer 30

Aristotle

Question 31

States that every object continues in the state of rest or uniform speed unless acted on by a non zero force

Answer 31

Law of Inertia (1st Law)

Question 32

The measure of inertia

Answer 32

Mass

Question 33

States that the acceleration of an object is directly proportional to the net force and inversely proportional to the mass

Answer 33

Law of Acceleration (2nd Law)

Question 34

This force cannot be reduced into other basic interactions

Answer 34

Fundamental Force

Question 35

A force that attracts two objects with mass

Answer 35

Gravitational Force

Question 36

Magnitude of the gravitational force exerted on the object and varies with location

Answer 36

Weight

Question 37

An attractive or repulsive force between charged bodies

Answer 37

Electromagnetic Force

Question 38

Force responsible for radioactive decay of some nuclei

Answer 38

Weak Nuclear Force

Question 39

Force that holds the constituents of the nucleus together

Answer 39

Strong Nuclear Force

Question 40

A force exerted to an object

Answer 40

Applied Force

Question 41

A pulling force exerted by a rope, chain, string, or cable

Answer 41

Tension

Question 42

Perpendicular force

Answer 42

Normal Force

Question 43

SI unit for force

Answer 43

N (Newton)

Question 44

States that for every action, there is an equal and opposite reaction

Answer 44

Law of Interaction (3rd Law)

Question 45

Occurs when a force acts upon an object to cause a displacement of the object

Answer 45

Work

Question 46

SI Unit of Work

Answer 46

Joule (J)

Question 47

Ability to do work

Answer 47

Energy

Question 48

Energy that is possessed by an object due to its motion or position

Answer 48

Mechanical Energy

Question 49

Energy possessed by an object due to its position or configuration

Answer 49

Potential Energy

Question 50

Energy due to its position

Answer 50

Gravitational Potential Energy

Question 51

Energy possessed by its body because of its motion

Answer 51

Kinetic Energy

Question 52

States that energy can neither be created nor destroyed. It can only change form

Answer 52

Conservation of Mechanical Energy

Question 53

Ratio of output work to the input work done by a device and it is expressed in percentage

Answer 53

Efficiency

Question 54

Amount of useful energy provided bu the device to the energy required to operate it

Answer 54

Efficiency

Question 55

Rate of doing work

Answer 55

Power

Question 56

SI Unit of Power

Answer 56

Watt (W)

Question 57

1hp is equal to how many watts?

Answer 57

746 watts