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## Physics week 1 and 2

by: Catherine Carter

105

1

3

# Physics week 1 and 2 PHY 107

Marketplace > University at Buffalo > Physics > PHY 107 > Physics week 1 and 2
Catherine Carter
UB

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These notes have chapters 1-3 and have all of the necessary equations.
COURSE
General Physics 1
PROF.
Dr. Kharchilava
TYPE
Bundle
PAGES
3
WORDS
CONCEPTS
Physics, Calculus
KARMA
75 ?

## Popular in Physics

This 3 page Bundle was uploaded by Catherine Carter on Thursday September 8, 2016. The Bundle belongs to PHY 107 at University at Buffalo taught by Dr. Kharchilava in Fall 2016. Since its upload, it has received 105 views. For similar materials see General Physics 1 in Physics at University at Buffalo.

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Date Created: 09/08/16
Physics  physics is shown through math and is about the properties of natural objects  try to predict what will happen through a physical (empirical) law which has a range of  validity   must include units with everything o in mechanics you only need length, time, and mass these are known as base  quantities and all other units can be derived from these    need to use dimensional analysis (series of multiplying fractions) to convert units the  units you have should cancel so that you get the units you want  must maintain sigfigs, least number for multiplication and division, smallest decimal  place for addition and subtraction   parameters that can be completely described by a number is a scalar (ex: temperature,  mass, speed)   parameters that require information about both magnitude and direction are known as  vectors (ex: displacement, velocity, acceleration)  displacement shows the distance from point a to point b and is the same no matter how  much distance was traveled to get there   to show a vector you either have the letter in bold or the letter with an arrow over it, the  magnitude of the vector is indicated by italic print  vectors along the x, y, and z axes are labeled by i, j, and k with a ^ over each    vector notation   use these to find the x and y components of the vector if the x and  y components are known you can use these formulas to find the magnitude and the angle  of the vector  to add vectors you need to add each of the components (order doesn’t matter) to subtract  vectors you need to subtract the components (order does matter)   to multiply a vector by a scalar you have to multiply each component by that scalar value   the scalar product (dot product)  of two vectors use this if you know the magnitude and of the vectors and the angle between them  Use this when you only  know the components   for the vector product (cross product) of two vectors, you can use this if you know the  magnitude of the vectors and the angle between the two vectors   the order  matters and if you switch the order you must negate the first term after it has been  switched. this only gives you the magnitude. you need to use the right hand rule to find  the direction.  o the right hand rule:   put your right hand so that it goes along the first vector and so that you can fold your fingers to line up with the second vector and form a right angle.  your thumb then points in the direction of the third vector o the magnitude can also me found using  Mechanics is composed of kinematics and dynamics o kinematics is how to describe motion o dynamics is what the origin of motion is   the negative sign indicates direction along the straight line path   a change in position is shown through   the average velocity is shown by   the average speed is the total distance traveled in a time interval, average speed is a scalar unit, not a vector   instantaneous velocity is shown by the slope of the tangent line of the position versus  time graph and   average acceleration is   instantaneous acceleration is the slope of the tangent line of the velocity versus  time  graph   the relationship of the graphs to each other   equations for motion with constant acceleration   for one dimensional kinematics problems you should draw a picture and label the axes  and the vectors  the force of gravity is 9.8 m/s^2  for projectiles: o the time it takes to reach the height is  o the height it reaches is   for non­constant acceleration you can find the velocity by  you can find the displacement by

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