Flashcards in Chapter 1 Essential Concepts (Bushong) Deck (32):

1

## What are the three most basic/fundamental quantities?

### Length, mass, time

2

## Seven derived quantities

###
Velocity

Acceleration

Force

Momentum

Work

Power

Energy

3

## Define velocity

### The speed at which an object is moving

4

## Define acceloration

### A rate of change in velocity

5

## Define force

### An action that changes the motion of an object

6

## Define momentum

### The product of mass times velocity

7

## Define work

### The application of force to an object

8

## Define power

### The rate at which work is done

9

## Define energy

### The capacity for doing work

10

## What does S I system stand for

### International system or metric system

11

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

###
Mass = kilograms

Length =meters

Time = Second

12

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

###
Mass = pound

Length = foot

Time = Seconds

13

## What is the equation for velocity

###
Velocity equals distance divided by time

V= d/t

14

## What is the equation for acceleration

###
Acceleration equals final velocity minus initial velocity divided by time

A=(v2-v1)/t

15

## Equation for force

###
Force equals mass times acceleration

F=ma

16

## What is the equation for momentum

###
Momentum equals mass times velocity

P=mv

17

## What is the equation for work

###
Work equals force times distance

Work=fd

18

## What is the equation for power

###
Power equals Work divided by time

P=work/t

19

## What is velocity expressed in

###
Meters per second

m/s

20

## What is acceleration expressed in

###
Meters per second squared

m/s^2

21

## What is force expressed in

### Newtons

22

## What is momentum expressed in

###
Kilogram meters per second

Kg-m/s

23

## What is work expressed in

### Joules

24

## What is Power express in

### Watts

25

## Define inertia

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

26

## Define energy

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

27

## Define potential energy

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

28

## Define Kinetic energy

### 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.

29

## What is newtons laws of energy, number one

### 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

30

## What is newtons second law of energy

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

31

## What is newtons third law of energy

### For every action there is an equal and opposite reaction

32