Chapter 1 Essential Concepts (Bushong)

Question 1

What are the three most basic/fundamental quantities?

Answer 1

Length, mass, time

Question 2

Seven derived quantities

Answer 2

Velocity
Acceleration 
Force 
Momentum
Work
Power
Energy

Question 3

Define velocity

Answer 3

The speed at which an object is moving

Question 4

Define acceloration

Answer 4

A rate of change in velocity

Question 5

Define force

Answer 5

An action that changes the motion of an object

Question 6

Define momentum

Answer 6

The product of mass times velocity

Question 7

Define work

Answer 7

The application of force to an object

Question 8

Define power

Answer 8

The rate at which work is done

Question 9

Define energy

Answer 9

The capacity for doing work

Question 10

What does S I system stand for

Answer 10

International system or metric system

Question 11

What unit of measurement is used in SI system for Mass, length, and time

Answer 11

Mass = kilograms
Length =meters
Time = Second

Question 12

What unit of measurement is used for the British system in mass, length, and time.

Answer 12

Mass = pound
Length = foot
Time = Seconds

Question 13

What is the equation for velocity

Answer 13

Velocity equals distance divided by time

V= d/t

Question 14

What is the equation for acceleration

Answer 14

Acceleration equals final velocity minus initial velocity divided by time
A=(v2-v1)/t

Question 15

Equation for force

Answer 15

Force equals mass times acceleration

F=ma

Question 16

What is the equation for momentum

Answer 16

Momentum equals mass times velocity

P=mv

Question 17

What is the equation for work

Answer 17

Work equals force times distance

Work=fd

Question 18

What is the equation for power

Answer 18

Power equals Work divided by time

P=work/t

Question 19

What is velocity expressed in

Answer 19

Meters per second

m/s

Question 20

What is acceleration expressed in

Answer 20

Meters per second squared

m/s^2

Question 21

What is force expressed in

Answer 21

Newtons

Question 22

What is momentum expressed in

Answer 22

Kilogram meters per second

Kg-m/s

Question 23

What is work expressed in

Answer 23

Joules

Question 24

What is Power express in

Answer 24

Watts

Question 25

Define inertia

Answer 25

Something with mass, in a state of motion that resist change when there is no force applied to it

Question 26

Define energy

Answer 26

The capacity for doing work. It may exist in potential, Kinetic, thermal, electrical, chemical, nuclear, or other various forms.

Question 27

Define potential energy

Answer 27

The energy that is stored in an object due to its position relative to some zero position.

Question 28

Define Kinetic energy

Answer 28

The energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to it’s stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless it’s speed changes.

Question 29

What is newtons laws of energy, number one

Answer 29

If an object is in motion it will stay in motion until acted upon by another force, just as an object at rest will stay at rest until acted upon by another force

Question 30

What is newtons second law of energy

Answer 30

Acceleration is produced when a force acts on a mass. The greater the mass, the greater the amount of force needed.

Question 31

What is newtons third law of energy

Answer 31

For every action there is an equal and opposite reaction

Question 32

Define conservation of energy

Answer 32

A principal stating that energy/matter cannot be created or destroyed, but that can be altered from one form to another.
-Einstein