New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Study guide

by: Udbluehen03

Study guide PHYS201012


Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

This is the study guide for exam 1. From chapter 2 to 4. Equations will be provided
Introductory Physics I
Study Guide
Physics, kinematics, vectors
50 ?




Popular in Introductory Physics I

Popular in PHYSICS (PHY)

This 7 page Study Guide was uploaded by Udbluehen03 on Sunday September 25, 2016. The Study Guide belongs to PHYS201012 at University of Delaware taught by Gogoladze,Ilia in Summer 2016. Since its upload, it has received 11 views. For similar materials see Introductory Physics I in PHYSICS (PHY) at University of Delaware.


Reviews for Study guide


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 09/25/16
Significant figures - Multiplication or division o The number of significance is equal to the number of significant figure in the least accurately known quantity - Addition and subtraction o The number of decimal places after addition or subtraction is equal to the smallest number of decimal places in any of the individual terms. Problem Solving in Physics; here are some guidelines: 1. Read the problem carefully 2. Sketch the system 3. Visualize the physical process 4. Strategize 5. Identify appropriate equations 6. Solve the equations 7. Check your answer 8. Explore limits and special cases Mechanics - The study of how objects move, how they respond to external forces, and how other factors, such as size, mass and mass distribution, affect their motion - This time we treat all physical objects as point like particles Position - Coordinate System o Defines an origin, a positive direction (orientation) and a unit of length o Uses one or more numbers to uniquely determine the position of a point  Earth is three dimensional (length, width, and height)  Space-time is four dimensional o A Cartesian Coordinate System  Specifies a location on a point relative to a fixed reference point - Initial position =x i - Final position = x f Distance - The total length of travel - SI unit: meter, m - Always positive - Scalar, because it has no direction Displacement - The change in position = final product – initial position - Δx = x - x f i - SI unit: meter, m - Can be positive, negative or zero - A vector Speed - Is described as the distance covered per amount of travel/time - Speed = distance covered/travel time - (m/s) - Always positive - When we know both speed and direction of an object we know its velocity Average Speed and Velocity - The average speed is defined as the distance traveled divided by the time the trip took o Average speed = distance/elapsed time - Average velocity o Displacement/elapsed time Δx x −x = f i o Vav = Δt tf−ti o SI unit: meter per second, m/s - If you return to your starting point, your average velocity is zero.Instantaneous Velocity lim Δx - V = Δt→ 0t - SI unit: meter per second, m/s - Tangent of the curve Acceleration - Acceleration Is the rate at which velocity changes with time. The change in velocity may be in magnitude, in direction, or in both - Acceleration = change in velocity/time interval Δv vf−vi - aav= = Δt tf−ti - SI unit: meter per second per second= m/s 2 - When the velocity and acceleration of an object have the same sign, the speed of the object increases o The velocity and acceleration point in the same direction - When the velocity and acceleration of an object have opposite signs, the speed of the object decreases o The velocity and acceleration point in the opposite directions. o Deceleration Instantaneous Acceleration ΔV - a = lim Δt Δt→ 0 2 - SI unit: m/s Constant Acceleration Equations of Motions Variables Related Equations Velocity, time, acceleration V=V +0at Initial, final, avg velocity Vav = ½(V +0) Position, time, velocity X = X 01/2(V +V)0 Position, time, acceleration X =X 0 V t 0(1/2)at 2 Velocity, position, acceleration V = V +02a(X-X0) = V 0 + 2aΔx Scalar - A scalar quantity is completely specified by a single value with an appropriate unit and has no direction o Can be positive (speed), negative, and a direction (temperature) o Length, area, volume, speed, mass, density, temperature, energy, work, power Vector - A mathematical quantity with both a magnitude and a direction - Cannot have more than three components - Displacement, direction, velocity, acceleration, momentum force, lift, drag, weight Equality of two Vectors - Two vectors are equal if they have the same magnitude and the same direction. - If |A| = |B| and they point along parallel lines Adding Vectors - Vector addition is very different from adding scalar quantities. - When adding vectors, their directions must be taken into account. - Units must be the same - Two ways to add vectors o Graphically  Tip to tail or head to tail  The resultant is drawn from the origin of the first vector to the end of the last vector  When you have many vectors, just keep repeating the process until all are included o Algebraic  More convenient - When two vectors are added, the sum is independent of the order of the addition. This is the Commutative Law of Addition. o A+B=B+A - When adding three or more vectors, their sum is independent of the way in which the individual vectors are grouped. This is called the Associative Property of Addition. ⃗ ⃗ ⃗ ⃗ ⃗ ⃗ o A+(B+C)+(A+B)+C Components of a Vector - A component is a projection of a vector along an axis. o Any vector can be completely described by its components Ax+Ay A - are the component vectors of o They are vectors and follow all the rules for vectors. Ax+Ay A - are scalars, and will be referred to as the components of A x+A y2 - A = √ Ay - θ = tan ( ) Ax - Ax = A cosθ - Ay = A sinθ - The components can be positive or negative and will have the same units as the original vector - The signs of the components will depend on the angle Multiplying Vector - Multiplying vectors by scalars o the multiplier changes the length, and the sign indicates the direction Adding Vectors Using Components - Find the components of each vector to be added. - Add the x- and y-components separately. - Find the resultant vector Subtracting Vectors - The negative of a vector is a vector of the same magnitude pointing in the opposite direction. - D=A−B ⃗ Unit Vectors - A unit vector is a dimensionless vector with a magnitude of exactly 1 - Unit vectors are used to specify a direction and have no other physical significance - Provide a convenient way of expressing an arbitrary vector in terms of its components - Projectile motion is a form of motion in which an object or particle (called a projectile) is thrown near the surface, and it moves along a curved path under the action of gravity only . Projectile Motion – Problem Solving Hints - Conceptualize o Establish the mental representation of the projectile moving along its trajectory. - Categorize o Confirm air resistance is neglected. o Select a coordinate system with x in the horizontal and y in the vertical direction. - Analyze o If the initial velocity is given, resolve it into x and y components. o Treat the horizontal and vertical motions independently. - Analysis o Analyze the horizontal motion with the particle-under-constant- velocity model. o Analyze the vertical motion with the particle-under-constant- acceleration model. o Remember that both directions share the same time. - Finalize o Check to see if your answers are consistent with the mental and pictorial representations. o Check to see if your results are realistic


Buy Material

Are you sure you want to buy this material for

50 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Amaris Trozzo George Washington University

"I made $350 in just two days after posting my first study guide."

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.