Unit 1 - Linear Motion

Question 1

7 major areas of physics?

Answer 1

1. Mechanics
2. Thermodynamics
3. Optics
4. Quantum Mechanics
5. Relativity
6. Electromagnetics
7. Vibrations + Waves

Question 2

Create a sentence: Motion, force, Energy, Matter

Answer 2

ENERGY is used to produce FORCE, which sets MATTER into MOTION

Question 3

Instantaneous Velocity

Answer 3

=average velocity (occurs when ^t approaches 0)

Use > m=^y/^x

Question 4

Area under Curve Method

Answer 4

1/2BH = area of triangle (net displacement should=0)

Question 5

Natural World

Answer 5

Physical World (what you perceive)

Question 6

accuracy

Answer 6

how close

Question 7

precision

Answer 7

how consistent

Question 8

scalar quantity

Answer 8

size w/NO direction (mass/speed)

Question 9

Vector quantity

Answer 9

size w/direction (velocity/acceleration)

Question 10

acceleration

Answer 10

= change in velocity (turning or slowing down)

Question 11

free fall

Answer 11

any 2 objects in freefall experience the same acceleration and will hit ground at same time (ignoring air resistance)

Question 12

Vertical free fall velocity

Answer 12

at origin objects thrown vertically have same final velocity as initial velocity

Question 13

Variables:
^x=
^t=
d=
t=
s=

Answer 13

^x= displacement
^t=change in time
d=distance
t=time
s=speed

Question 14

More Variables:
Vx=
Ax=
g=
^y=

Answer 14

Vx= velocity
Ax= acceleration
g= gravity (-9.8)
^y= vertical displacement

Also> g=Ax