Chapter 1 Essential Concepts (Bushong) Flashcards Preview

Radtech Physics A151 > Chapter 1 Essential Concepts (Bushong) > Flashcards

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

Define conservation of energy

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