Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
What is the resultant displacement of John on the interstate highway?
  • bigzee20
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4
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Position, velocity, and acceleration vectors
  • riafran
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1
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9K
How Long Before Overhead Should Supplies Be Dropped from a Plane?
  • Natali
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1
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7K
Soap Bubble interference-verify answer
  • bcjochim07
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3
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12K
How to Calculate the Velocity of a Projected Object at Impact?
  • ashi1416
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10
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2K
How Do You Calculate Specific Heat and Identify Unknown Substances?
  • lynn0808
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1
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2K
Understanding the Acceleration of a Bureau on a Rough Surface
  • musicfairy
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2
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6K
Calculating Sound Level from One Firecracker
  • physics1987
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6
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Law to preserve motion quantity help ( picture included to help describe )
  • Akuu
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3
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Simple Speed Problem Diagram Help
  • swede5670
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5
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Solving Physics Force Problems: Finding Resultant Force Components and Magnitude
  • darealprince
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3
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2K
Pushing wooden creat - Friction
  • kmikias
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1
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2K
Are My Physics Test Answers Correct?
  • mastiffcacher
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1
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2K
Solve Free Fall Question: Earth vs Moon Gravity
  • Johnny_07
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7
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2K
Frequency of a Standing Wave on a String
  • bcjochim07
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4
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5K
Work and potential in an electric field
  • sebby
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2
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Finding net force on charges on xy plane
  • gnarkil
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6
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11K
Solving Distance w/ Initial Velocity: Lab Homework
  • microdoodle
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8
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3K
What Forces Are Not Exerted on a Bathroom Scale?
  • Mike Hunt
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1
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3K
Electric Potential Energy of electron orbits
  • nckaytee
  • · Replies 8 ·
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8
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13K
What is the minimum speed needed for a trout to jump a 2.5 m waterfall?
  • whyorwhynot
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4
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4K
Optics: What is the speed of the sprinter's image?
  • bcjochim07
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1
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5K
Applying Newtons laws ( Equilibrium)
  • sktgurl930
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5
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3K
Average Velocity Graph: Determine its Values
  • Toxage
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1
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2K
Solving Force on Pulley: 25kg Accelerating at 1.4m/s^2
  • Jstew
  • · Replies 7 ·
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7
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5K
Kinematics in two dimensions of golf ball
  • goodcoverage
  • · Replies 6 ·
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6
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12K
Calculating Relative Velocity of Grenade in Moving Vehicles
  • anubis01
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2
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5K
Find acceleration of the mass immidiately after rope is cut
  • veronicak5678
  • · Replies 10 ·
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10
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4K
Projectile Fired Against A Slope
  • veronicak5678
  • · Replies 12 ·
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12
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5K
Problem solving with forces and friction.
  • Thoven
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3
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5K
How to Solve Vector Problems in Rotated Coordinate Systems
  • iconwin
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5
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12K
What is the maximum gravitational force between two uniform spheres?
  • gmunoz18
  • · Replies 3 ·
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3
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9K
Motion in 2 Dimensions homework problem =]
  • riafran
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1
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2K
Max radius of falling liquid drop
  • bengaltiger14
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1
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4K
A Pickup Truck and a bit of Friction
  • Bachi234
  • · Replies 3 ·
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3
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5K
Maximizing Angular Frequency for Non-Sliding Blocks on a Turntable
  • v3lox
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4
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3K
Stupid Stubborn Mule and his Kinetic/Static Friction
  • Phoenixtears
  • · Replies 6 ·
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6
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11K
Learn How to Solve Impulse Problems with Step-by-Step Examples
  • crimsonfears
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2
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3K
How Do You Calculate Initial Velocity and Angle in Two-Dimensional Kinematics?
  • zn23
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1
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3K
Calculating Vo for a Basketball Shot at 40 Deg Angle
  • warjunkie
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1
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2K
Circular motion of identical spheres in space
  • sberreb
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1
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3K
How Do You Calculate Maximum Velocity and Height for a Rocket Launch?
  • Jimmy Rose
  • · Replies 11 ·
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11
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7K
Finding speed when fish jumps out of water
  • sydneyown
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1
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7K
Height at which objects will collide
  • 05holtel
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4
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I have no clue what the normal force is :-(
  • HelloMotto
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1
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2K
What Factors Influence Acceleration in Non-Uniform Circular Motion?
  • MasterTinker
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1
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Tension between 2 blocks and friction.
  • CaptainSFS
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3
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13K
How to Calculate Average Power and Roller Coaster Speed on the Moon?
  • aforce20
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9
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Physics mechanics kinematics question?
  • fatherlewis
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9
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13K
What is the change in entropy of raspberry jelly during heating?
  • Sheneron
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2
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I need some clarification Thermo Cycle
  • Saladsamurai
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1
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4K
Photon Momentum Calculation for 25 x 105 erg Energy
  • melissajohn
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5
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10K
AP Physics - Freely Falling Objects
  • Blodwynne
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1
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3K
Help Me Find the How High Was the Diving Board?
  • FlippyBP
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7
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Fluid Dynamics, Buoyancy problem
  • latitude
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3
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6K
How Far Must You Walk to Experience Silence Between Two Phase-Aligned Speakers?
  • Foxhound101
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6
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22K
Forces and Newton's Laws of tension
  • lmbiango
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5
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Projectile, Range, Maximum Height, Time of Flight Problem
  • Gimp Mask
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1
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What Formula Calculates Stopping Distance with Negative Acceleration?
  • missie
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Initial Mass of Oxygen + Mass of Oxygen leaked out
  • ryaneye
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3
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8K
What is the tension in the string for two blocks on a spinning turntable?
  • rgalvan2
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4
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What Wavelengths Create Standing Waves on a 2.0 Meter Stretched String?
  • viciousp
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2
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Relative Velocity (Two-Demensional Motion and Vectors)-hw help
  • Tami24
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2
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4K
Deriving Equation: g = aave(M + m / m)
  • vrobins1
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3K
Moles & Ideal Gas: Force at 24.0 & 108 C
  • ryaneye
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1
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7K
How Long Does It Take a Skier to Descend a 320m Hill at 2.30 m/s²?
  • soapyshrimp
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3
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3K
Optimizing River Crossing Time for a Hunter Using a Powerboat
  • joe215
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2
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12K
How Do You Calculate the Net Electric Force on a Particle?
  • jelliDollFace
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10
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3K
Supposedly Simple, 1-D Motion Question
  • Luca169
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4
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5K
Projectile Question: How Much Vertical Distance Does Ball Clear Crossbar?
  • menesh2002
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1
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Very basic motion law - Newton's 2nd
  • 2clients
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1
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Thermodynamic Cycles: Understanding Energy Balance and Work-Energy Relations
  • Saladsamurai
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6
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3K
Location of zero net electric force
  • gnarkil
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4
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Electrical circuits conceptual question
  • jaejoon89
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3
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10K
Electric Circuits, Kirchhoff's Rules
  • yayirunin2car
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3
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16K
Energy lost due to dissipation by air drag
  • rosstheboss23
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5
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18K
Calculating Final Velocities in a 2-Dimensional Elastic Collision
  • lpcampbe
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2
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4K
What are some challenging dynamics practice problems for next week's assignment?
  • CDink
  • · Replies 23 ·
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23
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Find speed of two objects after collision
  • JJones_86
  • · Replies 12 ·
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12
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11K
HELP A question on Kinematics in 2D & 3D?
  • Kudo Shinichi
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3
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2K
How much water has been lost from a person exercising?
  • kyaat
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2
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8K
Finding R in terms of h for a ball dropped at v with 2D motion?
  • -EquinoX-
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2
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Including uncertainties in kenematic equations
  • omarsalem91
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2
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3K
How Does Acceleration as a Function of Position Affect Speed and Travel Time?
  • fdsadsfa
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5
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3K
Airplane drops a package (relative motion)
  • southernbelle
  • · Replies 11 ·
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11
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19K
Need help on Motion in a Resistive Medium
  • eyvhgi557r
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1
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2K
Kinematics - acceleration in a straight line
  • Mitchtwitchita
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1
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6K
Riding a motorcycle on inclined plane
  • azure kitsune
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1
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3K
Vectors and Beyond (two problems)
  • pippintook
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1
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2K
What Is the Frictional Force Acting on a 16 kg Mass on an Incline?
  • kmikias
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1
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2K
Projectile on an Incline question
  • funzone36
  • · Replies 1 ·
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1
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2K
Interference in light rays due to phase difference
  • sabinscabin
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5
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8K
Calculating Geosynchronous Orbit for a Satellite Around Jupiter's Moon
  • gonzalo12345
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1
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3K
Motion on Inclined Plain with Pulley
  • magixx
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1
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3K
What is the Correct Calculation for the Second Force in Vector Notation?
  • ganondorf29
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2
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5K
Newtowns 1st and 2nd laws question.
  • jovankamcev24
  • · Replies 1 ·
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1
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5K
Calculate Speed from Force, Mass, and Acceleration | Equation Help - Kevin"
  • Husker70
  • · Replies 4 ·
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4
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2K
Projectile Motion Problem: Find v_0y & v_0x
  • jnimagine
  • · Replies 12 ·
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12
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3K
Uniform Motion on a Circular Path
  • Phan
  • · Replies 16 ·
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16
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9K
Solve 2-D Motion Practice Homework: Truck & Watermelons
  • blackrose75
  • · Replies 1 ·
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1
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3K