Physics Final

Question 1

What is the metric conversion table?

Answer 1

Kilo-Hecto-Deca-BASE-Deci-Centi-Milli

Question 2

Inertia

Answer 2

The tendency of an object to resist change in motion

Question 3

Momentum

Answer 3

mass*velocity

Question 4

Force

Answer 4

• a push or pull

- vector quantity: magnitude and direction

Question 5

Friction (4 kinds)

Answer 5

• Static
• Sliding
• Rolling
• Fluid

Question 6

Gravity

Answer 6

A natural force that pulls objects towards each other

Question 7

Mass

Answer 7

Matter in an object

Question 8

Speed

Answer 8

Scalar quantity calculated by dividing distance by time (m/s)

Question 9

Acceleration

Answer 9

• rate of change in velocity

- Change in velocity/time

Question 10

Base unit for length

Answer 10

meters (m)

Question 11

Base unit for liquid volume

Answer 11

liters (L)

Question 12

Base unit for mass

Answer 12

grams (g)

Question 13

Base unit for temperature

Answer 13

Celsius

Question 14

Founder of modern physics

Answer 14

Sir Isaac Newton

Question 15

How is force calculated? What is the unit?

Answer 15

Newtons (N) are the quantity used to measure force

1 Newton is required to give a 1 kg mass an acceleration of 1/m/s/s (1m/s⋀2). 1 Newton= 1 kg*m/s⋀2

Question 16

What is Newton’s First Law?

Answer 16

An object at rest will remain at rest and an object in motion will stay in motion unless acted upon by and unbalanced or outside force

Question 17

State Newton’s Second Law

Answer 17

• F=ma

- a=f/m

Question 18

Net force

Answer 18

Sum of all forces

Question 19

What is an action-reaction pair?

Answer 19

• Force (push or pull)
• pair of forces acting on two interacting objects. The size of the forces are equivalent.

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Question 20

State Newton’s Third Law

Answer 20

For every action, there is an equal but opposite reaction

Question 21

Energy

Answer 21

A system possesses energy if it has the ability to do work

Question 22

Energy is a _______ quantity and is ________, so it cannot always be perceived

Answer 22

scalar; abstract

Question 23

Kinetic energy

Answer 23

Energy associated with motion

Question 24

Potential energy

Answer 24

Energy associated with position

Question 25

Examples of kinetic energy

Answer 25

-mechanical energy
-thermal energy
-electrical energy
electromagnetic radiation

Question 26

Examples of potential energy

Answer 26

• gravitational energy
• strong/weak nuclear energy
• electromagnetic energy

Question 27

Law of Conservation of Energy

Answer 27

Energy is never lost, just transferred

Question 28

Unit for energy

Answer 28

joules (J)

Question 29

balanced force

Answer 29

two equal forces, acting on an object

Question 30

unbalanced force

Answer 30

movement of object; forces are not equal

Question 31

velocity

Answer 31

speed and direction

Question 32

motion maps show

Answer 32

both magnitude and directioin

Question 33

the (0, 0) point on a position-time graph is called the

Answer 33

origin or reference point

Question 34

the x-axis for a position-time graph is labeled as

Answer 34

time (seconds)

Question 35

the y-axis for a position-time graph is labeled as

Answer 35

meters

Question 36

work

Answer 36

when a force is exerted to move an object some distance in which the force is exerted

Question 37

in work, the force

Answer 37

must be in the same direction as the movement of the object

Question 38

work=

Answer 38

force*distance

Question 39

unit for work

Answer 39

newton*meter

joule (J)

Question 40

a Joule is

Answer 40

the amount of work done when a force of 1 newton is exerteed to move an object a distance of 1 meter

Question 41

power

Answer 41

the rate at which work is done

Question 42

power=

Answer 42

work/time

force*distance/time

Question 43

unit of power

Answer 43

joule per second (J/s)

known as the watt

Question 44

two types of energy

Answer 44

kinetic and potential