1) vavg = d/t 2) vavg = (vi + vf)/2

3) a = (vf - vi)/t 4) vf = vi + at

5) d = vit + (at2)/2 6) vf2 = vi2 + 2ad

7) netF=ma=(winner-loser)force 8) Ff = uFN

9) weight = mg = Fg 10) g = 9.80 m/s2 or N/Kg

II. Assignment : COMPLETE Ch.3 Review; DO P.62-3 Q#3,8 & 10

DAY 5: I. Forces -Dynamics, the causes of motion change

1. The 4 Universal forces(and associated energies): Eureka Video Part I Energy and Force(segments 1-3)

1) Gravitational-caused by an object’s amount of mass ("stuff", atoms present)

2) Electromagnetic-caused by an object’s amount of charge and moving charge

3) Nuclear weak-caused by a nucleus’ amount of neutrinos

4) Nuclear strong-caused by a nucleus’ amount of quarks

II. Newton’s First Theory(Law) of Motion(and INERTIAL MASS)

1. OBSERVATIONS-The Eureka Video and Air Track Demonstration carts show a)objects at rest tend to ____________________________, and b)objects in motion tend to _____________________________________.

c)The Canonball-string Puzzle-sketches

OBSERVATION: a) a quick pull results in the ball doing 1.a) or 1.b)? and the "pulling" string breaks; b) a slow pull allows 1.a) or 1.b)? and the ball causes the other string to stretch and break first !

2. EXPLANATIONS(P.62-3 Q#3)-An object __ __ __ __ __ __ __ __ __ in its state of REST or__ __ __ __ __ __ __ MOTION in a __ __ __ __ __ __ __ __

LINE, UNLESS it is acted upon by an __ __ __ __ __ __ __ __ __ __

amount of FORCE.

II. Assignment : DO P.63 P#5 &7