Chapter 3, 4, 5

Front 1

Vector

Back 1

Quantity that has both number (magnitude) and direction (velocity)

Front 2

Scalar

Back 2

Just a number (speed)

Front 3

Adding Vectors

Back 3

Head-to-Tail

Front 4

Subtracting Vectors

Back 4

-It is not communitive
- Put the head pointing the opposite direction

Front 5

Multiplying a vector by a scalar

Back 5

Make that vector however many times longer depending on the number said(scalar)

Front 6

Components of a Vector

Back 6

- Vertical Component
- Horizontal Component

Front 7

Pythagorean Thm

Back 7

a2 + b2 = c2
c2 = hypoteneuse

Front 8

Ball Launch Experiment

Back 8

- How far forward did it go?
- How high was the cliff?
- How fast was the car going when it hit the ground?

Front 9

Vertical and Horizontal Motion

Back 9

They are independent

Front 10

Projectile Motion

Back 10

Freefall in 2 or 3 D
Horizontal Speed- no change
Vertical Speed- affected by gravity

Front 11

Maximum Range

Back 11

-Any two angles that add up to 90* will hit the same spot

Front 12

Earth Orbit

Back 12

8 km/s

Front 13

Galileo: Inertia

Back 13

- Resistance to change in motion
- The property of objects to keep doing whatever they are doing

Front 14

Newton's 1st Law

Back 14

- Objects in motion remain in motion at a constant velocity
- objects in rest remain at rest
- Unless acted upon by a net total outside force that it not from that objects itself

Front 15

Mass

Back 15

- Physical amount of material in that object
- "mass is the measure of inertia"
- more mass-- more inertia

Front 16

Weight

Back 16

- Force of gravity acting on an object
- w=mg

Front 17

Newton

Back 17

N
kgm/s2 = N

Front 18

Equilibrium

Back 18

When the net force is 0

Front 19

Force Diagrams

Back 19

- Draw only one object
- Draw forces on that object as vectors
- Only draw forces that act ON the object

Front 20

Net force

Back 20

- Sum of all of the forces on an object
- Fnet= 0 - no change in motion
-rest, constant velocity

Front 21

Newton's 2nd Law

Back 21

- More mass-- more resistance to change in motion (more inertia)
- apply more net force- more change in motion
a= f/m

Front 22

Newton's 2nd Law for gravity

Back 22

-Constant force produces constant acc
Fgrav=magrav
w=mg

Front 23

Freefall

Back 23

agrav=Fgrav/m
=w/m
=mg/m
=g
- All objects fall at the same rate

Front 24

Pressure

Back 24

Force Concentration
P=F/A
More area- less pressure
(Pa)

Front 25

Pascals

Back 25

Measurement for Pressure

Front 26

Friction

Back 26

- Force that opposes motion
- caused by intermolecular snagging

Front 27

Pressure and Friction

Back 27

Pressure, Surface Area
Book on side vs. Book on spine: Same total friciton
Wide tires: No change in traction (friction)

Front 28

Air Resistance

Back 28

- Friction with air
- Depends on speed, surface area
Fnet 0, Acc 0

Front 29

Terminal Velocity

Back 29

- Reaches its final speed, and continues going at the same rate
- Reaches equilibrium
- Morse massive- faster terminal velocity and also hits the ground first
- Single- Reaches terminal velocity first

Front 30

Satellites

Back 30

Projectiles in Orbit
close to earth- 8 km/s

Front 31

Earth's Curvature

Back 31

8 km forward
5 m downward

Front 32

Inertia

Back 32

-Resistance to change in motion
- depends on mass- measure of inertia