Unit I

Question 1

What are the Three Laws of Motion?

Answer 1

Law of Inertia, Law of Acceleration, Law of Action-Reaction

Question 2

What was Newton’s book where he stated the three laws of Motion?

Answer 2

Philosophiae Naturalis Principia Mathematica

Question 3

Tendency of a body to resist any change its motion.

Answer 3

Inertia

Question 4

States that a body at rest will continue to stay at rest, and a body in constant motion will continue to be in motion unless acted upon by a net external force.

Answer 4

Law of Inertia

Question 5

States that acceleration is directly proportional to force and inversely proportional to mass.

Answer 5

Law of Acceleration

Question 6

For every action, there is an equal and opposite reaction.

Answer 6

Law of Interaction / Law of Action-Reaction

Question 7

He coined the word friction.

Answer 7

Galileo Galilei

Question 8

Is a type of motion that allows an object to follow a circular path while maintaining a constant speed.

Answer 8

Uniform Circular Motion

Question 9

Center-seeking force, comes from the word centri, which means “center.”

Answer 9

Centripetal Force

Question 10

Defined as any push or pull.

Answer 10

Force

Question 11

Defined as how far an object is from where it started.

Answer 11

Displacement

Question 12

Product of the force and displacement in the direction of force.

Answer 12

Work

Question 13

Formula of Work.

Answer 13

Fcos d

Question 14

Rate of doing work.

Answer 14

Power

Question 15

Formula for power.

Answer 15

W/t

Question 16

Ability to do work.

Answer 16

Energy

Question 17

Energy possessed by an object by virtue of its position.

Answer 17

Potential Energy

Question 18

Formula for PE.

Answer 18

PE = mgh

Question 19

Energy present in moving objects.

Answer 19

Kinetic Energy

Question 20

Formula for KE.

Answer 20

1/2mv^2

Question 21

Formula for Velocity.

Answer 21

Square root of 2KE/m

Question 22

It is produced by vibrations.

Answer 22

Sound

Question 23

Is any form of disturbance that carries energy from one place to another.

Answer 23

Wave

Question 24

Waves that require a medium for transmission are called __________.

Answer 24

Mechanical Waves

Question 25

Waves that do not require any medium for transmission.

Answer 25

Electromagnetic waves

Question 26

Types of waves

Answer 26

Transverse, Longitudinal, Surface

Question 27

Part of the wave where molecules are compressed or where there are shorter wavelengths.

Answer 27

Compression

Question 28

Part of the wave where molecules are spread out or stretched.

Answer 28

Rarefaction

Question 29

Speed of sound in air.

Answer 29

331 m/s^2

Question 30

Formula for getting speed of sound.

Answer 30

T*0.6+331 m/s^2

Question 31

Is an electromagnetic wave that can travel even without a medium.

Answer 31

Light

Question 32

Is the average kinetic energy of a system.

Answer 32

Temperature

Question 33

Defined as energy in transit. It is a type of energy that transfers from one body to another whenever there is a difference of temperatures.

Answer 33

Heat

Question 34

What is the SI unit of Heat?

Answer 34

Joules (j)

Question 35

Hotter objects stops from giving off heat when both objects reach ________.

Answer 35

Thermal Equilibrium

Question 36

He was named after Celsius.

Answer 36

Anders Celsius

Question 37

States that voltage is directly proportional to current under constant resistance.

Answer 37

Ohm's law

Question 38

What are the formulas in Ohm's law.

Answer 38

V = IR, I = V/R, R = V/I

Question 39

He formulated Ohm's law.

Answer 39

Georg Simon Ohm