Physics

Question 1

What is physics?

Answer 1

The study of motion

Question 2

What is Newton’s first law?

Answer 2

Inertia

Question 3

What is Newton’s third law?

Answer 3

Equal and opposite forces

Question 4

What topics does physics include?

Answer 4

Motion of physical objects, magnetism and electricity, thermodynamics, and more.

Question 5

What is force and the formula for force?

Answer 5

A push or pull on an object
F = m * a
Measured in Newtons

Question 6

What is needed to get something to move?

Answer 6

A force greater than the force of the object
(Like tug of war)

Question 7

What is the difference between Speed and Velocity? What are the formulas for them?

Answer 7

Speed: Distance and time (s = d/t)
Velocity: Distance and time, but with direction (v = d/t)
Velocity is more important in science as well

Question 8

What is net force?

Answer 8

Net force is the amount needed to get an object to move, not the total force

Question 9

What is Newton’s second law?

Answer 9

The greater the mass, the more force needed to be applied to get it from 0 to moving (Acceleration).

Question 10

What is acceleration and the formula for it?

Answer 10

A change in velocity
a = Δv/Δt

Question 11

What is power and the formula for it?

Answer 11

The rate of doing work
P = W/Δt
Measured in Watts

Question 12

What is momentum and the formula for it?

Answer 12

The product of mass and velocity of an object
p = mv

Question 13

What is work and the formula for it?

Answer 13

The distance the force is applied over
W = fd
Measured in Joules

Question 14

What is impulse and the formula for it?

Answer 14

mΔv = FΔt

Question 15

What is the difference between potential and kinetic energy?

Answer 15

Potential energy is the possible energy of an object, kinetic energy is the energy of motion

Question 16

What is friction

Answer 16

The force that the surfaces of two objects exert on each

Question 17

What are the six simple machines

Answer 17

Levers, pulleys, screws, incline planes, wedges, wheel and axle

Question 18

What are the main forms of energy?

Answer 18

Kinetic, radiant, thermal, chemical, electric, and potential

Question 19

What causes electricity?

Answer 19

the relationship between positive and negative charges caused by electrons

Question 20

What is an insulator?

Answer 20

Materials that allow easy flow of electric current, like metal

Question 21

What is a conductor?

Answer 21

Materials that resist the flow of electric current, like rubber

Question 22

What is the 0th law of thermodynamics?

Answer 22

If two systems are in equilibrium with a third system, then the first two are in equilibrium with each other

Question 23

What is the 1st law of thermodynamics?

Answer 23

Energy cannot be created or destroyed

Question 24

What is the 2nd law of thermodynamics?

Answer 24

The entropy of a system will always increase, not decrease

Question 25

What is the 3rd law of thermodynamics?

Answer 25

Entropy of a perfect crystal at a temperature of absolute zero will be zero

Question 26

According to the second law of thermodynamics, does heat move from hot systems to cold systems? Or cold systems to hot systems?

Answer 26

Heat moves from hot systems to cold systems to seek equilibrium

Question 27

What is the 1st rule of circuitry

Answer 27

Circuit needs a conductor

Question 28

What is the 2nd rule of circuitry

Answer 28

Circuit needs an insulator to do something

Question 29

What is the 3rd rule of circuitry

Answer 29

Circuit needs positive and negative terminal

Question 30

Conduction, convection, and radiation are examples of what?

Answer 30

Transfers of thermal energy

Question 31

What is terminal velocity?

Answer 31

The final velocity of a falling object when it can no longer accelerate