POINTERS TO REVIEW IN PHYSCIS 1


1. Physics as a science
a. Scientific method
b. Branches of Science
c. What is Physics
d. Theory, model, law and hypothesis
e. SI unit and Si derived unit
f. Prefixes
g. Significant figure
h. Conversion
   in to cm
kg to lbs
km to miles
km to meter
i. scientific notation
2. Scalar and Vectors
a. Sketching
b. Splitting of vector
c. negative vector
d. addition of vector
e. subtraction of vector
f. resultant vector
3. General Concept of Motion
a. total distance
b. total displacement
c. average speed
d. average velocity
e. acceleration

in one dimension and two dimension (please study)

Example: (please study this)
A car is heading to the north and is traveling at 40km/hr and then smoothly made a westward turn and then travels at 25km/hr; hence, it is now heading to the west. What is the change in velocity of the car (∆V) What is the acceleration of the car (a)? The total travel time of the car as it smoothly changed its direction is 15min.


Given: Vi = 40km/hr  due north
           Vf = 25km/hr   due west
           t = 15min    = 0.25hr
           ∆V = ?
           a = ?




            





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