Physics Exam 1

fundamental quantities

assign specific unit with quantity (ex: length, mass, time)

derived quantities

quantities derived from fundamental quantities (ex: speed = distance/time)

terra

10^12

giga

10^9

mega

10^6

micro

10^-6

pico

10^-12

femto

10^-15

kinematics

use current state of motion to determine future state of motion

1D motion

motion in straight line

quantities needed to study motion

1. position —> x(t)

2. displacement —> dx = x_f - x_i

3. average velocity —> dx/dt

4. instantaneous velocity —> dx/dt of tangent

5. acceleration —> dV/dt

6. instantaneous acceleration —> dV/dt of tangent

how to read displacement on a (t,V) graph

the area under the graph is the displacement (integral)

free fall

1D motion under gravitational acceleration without air resistance