Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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What Is the Acceleration of a Soccer Ball on an Incline?
- Cole07
- · Replies 12 ·
Troubling frictional force problems
- OVB
- · Replies 3 ·
Solving Maximum Acceleration for 4WD Car on Dry Road
- jhk_1945
- · Replies 1 ·
1d Kinematics, missing something.
- Kildars
- · Replies 2 ·
Uniform Circ. Motion, Only Accel Given.
- intelligentDesign
- · Replies 7 ·
Understanding Tension: External Force vs. Reaction Force on a Spring
- dEEP6ix
- · Replies 1 ·
Azimuthal, magnetic and spin quantum numbers for n=3
- konartist
- · Replies 6 ·
How far does his center of mass move up
- chevyboy86
- · Replies 1 ·
Forces and Work Done by Weight on a Ramp
- Soaring Crane
- · Replies 5 ·
Is Acceleration Measured the Same in Meters as in Feet?
- Probie
- · Replies 7 ·
Why Does Gas Volume Decrease with Temperature Increase in My Calculations?
- CathyLou
- · Replies 3 ·
Heating water with a kettle and calculating latent heat of vaporisation
- CathyLou
- · Replies 2 ·
Should a Velocity vs. Height Graph for a Parachute Be Linear?
- smileandbehappy
- · Replies 5 ·
Circular motion lab: incorrect mass slope and explaining Newton's laws
- Byrgg
- · Replies 2 ·
How Can I Solve for Forces in a Physics Engine Without Knowing Acceleration?
- Tilon
- · Replies 8 ·
Constant acceleration and free fall
- sunbunny
- · Replies 2 ·
How Do You Calculate Tension in a Two-Block System on an Incline?
- OVB
- · Replies 2 ·
Calculating Mass of Pith Balls in Space with Gravitational and Electrical Forces
- bjgawp
- · Replies 4 ·
How Does Friction Impact Work Rate on an Inclined Plane?
- Soaring Crane
- · Replies 1 ·
Photoelectric effect white light
- Alt+F4
- · Replies 3 ·
Projectile motion and pirate ship
- blimkie
- · Replies 1 ·
Calculating the Angle of a Projectile Fired for 3x Range Horizontally
- jesuslovesu
- · Replies 3 ·
Elastic Potential Energy and the Spring Constant
- Soaring Crane
- · Replies 1 ·
Work done by expanding gas in a gun on a bullet
- TrippingBilly
- · Replies 2 ·
Weights on string in free fall with equal time intervals
- Aleksandar
- · Replies 4 ·
Work done on a force using dot product
- TrippingBilly
- · Replies 8 ·
The third law of Newton is always fulfilled?
- chuy
- · Replies 8 ·
Calculating Work Done by Gravity and Air Resistance on a Falling Raindrop
- shakejuhn
- · Replies 9 ·
What Forces Affect a Cyclist Coasting and Climbing a Slope?
- Min_Shin
- · Replies 1 ·
Having some Serious Trouble with Problem
- z3r0c001
- · Replies 3 ·
Electric Potential/Equilateral Triangle
- Siirous
- · Replies 2 ·
Block rotating on vertical rod at 36.9 degrees above horizontal
- John O' Meara
- · Replies 11 ·
Work done lifting a 12 kg ladder from horizontal to vertical
- Min_Shin
- · Replies 3 ·
Electric Potential/Capacitor Misconceptions
- Noesis
- · Replies 10 ·
Calculate Rise Time for Sinusoidal Signal at f_0
- VinnyCee
- · Replies 7 ·
The Physics of Boxes with No Friction: 10N Push Test
- caljuice
- · Replies 2 ·
What uncertainties should I assume when I only know the measured value
- leright
- · Replies 3 ·
Specific latent heat of vaporisation from heating and boiling water
- CathyLou
- · Replies 20 ·
Why Is My Calculation of Centripetal Acceleration Incorrect?
- mmiller39
- · Replies 11 ·
Solving Raindrop Paths on Ellipsoid with 4x^2+y^2+4z^2=16
- Haftred
- · Replies 3 ·
How Much Helium Is Needed to Lift a 4000 kg Load with a 600 kg Weather Balloon?
- JohnnyJohn
- · Replies 1 ·
Apparent Velocity Calculation for a Moving Rod in Special Relativity
- Warr
- · Replies 6 ·
Calculating Distance Downstream with Relative Velocity
- LastBloomingFlower
- · Replies 1 ·
Understanding Forces in Static and Dynamic Systems
- PascalPanther
- · Replies 2 ·
Maximum mass of block C for A and B to slide together
- superdave
- · Replies 2 ·
Question on motion in two dimensions:
- integra2k20
- · Replies 4 ·
Rocket with constant acceleration: height 80m after 2.6s
- XPX1
- · Replies 13 ·
Helicopter Forces: What Force Keeps Helicopter Aloft?
- mathewings
- · Replies 3 ·
What was the initial velocity of the ball?
- statefanchris
- · Replies 3 ·
Finding acceleration and tension with two masses and a pulley
- BunDa4Th
- · Replies 8 ·
Projectile motion: gold ball at 25° landing at 20 m/s, 30° below horizontal
- kara
- · Replies 6 ·
Newton's 2nd law involving pulley
- ysk1
- · Replies 6 ·
Doppler effect star and earth question
- valueduser
- · Replies 1 ·
Projectile with air resistance: finding average drag force
- cheechnchong
- · Replies 8 ·
Motorist drives south, west, then northwest—find total displacement and average velocity
- integra2k20
- · Replies 9 ·
Why Are Galilean Transformations Important in Understanding Relative Motion?
- ysk1
- · Replies 1 ·
What is the Period of the Sun's Rotation Based on Doppler Shift of Light?
- P3X-018
- · Replies 2 ·
What Should Be Included in a Statics Lab Report Introduction?
- Elson
- · Replies 6 ·
Calculating Angle Theta in a Two-Puck Elastic Collision
- NotMrX
- · Replies 5 ·
How Long Will It Take for the Rescue Ship to Reach You?
- bukky
- · Replies 2 ·
Calculating Force Exerted on a Baseball by a Pitcher
- physics1234
- · Replies 3 ·
Eigenvalue for DC motor convergence rate
- pcming
- · Replies 2 ·
Kinetic Energy of Automobile: 2100J at 5X Speed
- Sparda
- · Replies 1 ·
Solve for Coconut Drop Height: Kinematics Help on a Sunny Beach Day
- bukky
- · Replies 1 ·
How to Calculate Impulse with Mass and Velocity Change?
- mikefitz
- · Replies 6 ·
Metal Strip Magnetic Field question
- tigert2004
- · Replies 1 ·
Minimum acceleration for jumbo jet takeoff on 1.80km runway
- petal5
- · Replies 3 ·
Centrifugal (Ficticious) Force problem
- mst3kjunkie
- · Replies 2 ·
How Long Does It Take for a Skier to Stop on a Bunny Hill?
- quickslant
- · Replies 4 ·
Sliding Block Problem (We must solve together)
- Fusilli_Jerry89
- · Replies 9 ·
How much energy does a flat surface receive from an electromagnetic wave?
- Alt+F4
- · Replies 11 ·
Impedance, vibration resonance, and pitch problems
- Dunkaroos
- · Replies 5 ·
Tension Forces and rubber bands
- NIZBIT
- · Replies 3 ·
Determine the tension in the two strings
- BunDa4Th
- · Replies 3 ·
Simple but tricky problem, horizontal motion
- phynoob
- · Replies 2 ·
Impedance and Frequency- directly or indirectly related?
- Dunkaroos
- · Replies 1 ·
Finding Velocity and Direction in a Crosswind: Aircraft Navigation Problem
- LastBloomingFlower
- · Replies 3 ·
Angle with respect to x or y axis.
- ysk1
- · Replies 8 ·
What point in the sky should you aim a laser at to hit the Sun?
- mprm86
- · Replies 16 ·
Finding velocity in non-uniform circular motion
- plane
- · Replies 1 ·
Differential mechanics equation
- thenewbosco
- · Replies 3 ·
Modified Atwood problem with five tensions and applied force
- go2cnavy
- · Replies 6 ·
Graphing distance-time graphs for constant velocity motion
- mastershake
- · Replies 8 ·
Vector question: dot product in cylindrical coordinates
- JolileChat
- · Replies 2 ·
Optimal Coordinate System for Applying Newton's 2nd Law on an Inclined Plane
- ysk1
- · Replies 6 ·
Tension on a man pulled by horses vs. anchored to a tree
- Stevedye56
- · Replies 3 ·
Police car catching a speeder with constant acceleration
- everlasting_truth
- · Replies 3 ·
What forces are missing from the free-body diagram for m1?
- Dorothy Weglend
- · Replies 2 ·
What Are the Trajectories of Bugs Chasing Each Other on a Square?
- littleHilbert
- · Replies 3 ·
Elevator Acceleration Calculation
- youxcrushxme
- · Replies 14 ·
When to Add/Subtract Kinetic & Potential Energy?
- rkslperez04
- · Replies 6 ·
Kinematics problem (one dimension)
- Omri
- · Replies 2 ·
Inertia and density distribution
- SWiTCHRiDE
- · Replies 3 ·
Calculate the joggers average velocity
- needhelprightnow
- · Replies 2 ·
Maximum force up a 45° ramp to keep a 22 kg box at rest
- quickslant
- · Replies 44 ·
Solve Dynamics Problem to Find Coefficient of Friction
- Stevedye56
- · Replies 6 ·
Calculating Friction Force for Sliding Book
- Fusilli_Jerry89
- · Replies 3 ·
Solve Monkey Dropping Coconut Problem on a Sunny Day
- bukky
- · Replies 4 ·
How do you isolate the t-variable in the acceleration formula
- wScott
- · Replies 3 ·