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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Golf ball dropped from tall building: velocity after 3.99 s and impact speed
- prowlerplayer
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How Does Air Resistance Impact Projectile Motion in Sports?
- hidajua
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What is the Maximum Height a Basketball Reaches When Thrown Upward?
- swirly90
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Ranking the force of point charges
- macaco
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What is the capacitance of the system?
- exitwound
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Tension from Incline Plane: Only Measured in Horizontal Direction?
- yougene
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Should the driver make a run for it at an intersection with a yellow light?
- Pindle
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Magnitude and Direction of Charged Particles
- dmullin4
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Solving a Volcanic Eruption Problem with Constant Acceleration Equations
- martyk
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Finding Spring Constants After Cutting a Spring
- stpmmaths
- · Replies 3 ·
Minimum distance to avoid a collision
- MechaMZ
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How Fast Are Proton and Antiproton Moving Towards Each Other?
- beecher
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Direction of sailboat velocity after wind gust
- salaam
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What is the missing formula for projectiles launched at an angle?
- xxpbdudexx
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Solve Newton's Second Law: Find Angle of Elevation w/ 1.86cm Blocks
- oceanflavored
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Why Is My Vector Calculation Incorrect?
- sowmit
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Calculating Total Time for an Inclined Plane Motion Problem
- anubis01
- · Replies 7 ·
Electric field from potential V = 1920x² between parallel plates
- peaceinmideas
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Police car catching a stolen truck at constant speeds
- karkrash
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When is cosα a x component or y component in a problem?
- pillar
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How to Solve Physics Free Fall Problems
- Leo34005
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Does the Correspondence Principle Confirm Equal Probability in Quantum Systems?
- nargle
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Thermal Stress (Thermodynamics)
- Luongo
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Finding the Location of a Projectile After 3 Seconds
- Want to learn
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Speed of proton and electron accelerated through 135 V potential difference
- ktobrien
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Answers to physics homework questions 3 and 4b
- Leo34005
- · Replies 1 ·
Projectile Motion: Given Horizontal Distance Travelled and Time Taken
- zenythz
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Calculating Time and Velocity in a Projectile Motion Problem
- Rubix
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Force Vector Directed Along A Line
- camino
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Spacetime Invariance and Lorentz Equations
- LUphysics
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Deriving the 4th equation of motion
- danksnaks
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Angle between two equal magnitude vectors that sum to 6.37j
- Rail24
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Find the normal force and magnitude of acceleration.
- sonutulsiani
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Finding this displacement on a v/t graph
- jeffc93
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Four kinematics problems: thrown ball, falling pile driver, meteor, accelerating car
- dagitt
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Tension in strings supporting a 100-N weight
- sonutulsiani
- · Replies 12 ·
Throwing a ball upward on top of a building, find height of building
- ncwalke2
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How do I set up these problems?
- LocalYocal
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How Do You Calculate the Second Vector in a Vector Displacement Problem?
- singingblonde
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Acceleration When Pulled By Elastic Cord
- mill4864
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Why Does Running in the Rain Get You More Wet?
- fattydq
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How do negative charges accelerate in an electric field?
- Anden
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Harmonic Motion with Electricity
- nothilaryy
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What Is the Relative Uncertainty in the Square Root of a Measured Distance?
- unequal
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What is the solution to the tricky pendulum question on page 6?
- Chewy0087
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What is the Resistive Force of Air on a Baseball Pitch?
- MechaMZ
- · Replies 11 ·
Superposition of electric fields from uniform charge density
- jamdr
- · Replies 4 ·
Change in gravitational potential energy for lowering a textbook
- Ion1776
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Relativistic Mechanics (momentum)
- Cmertin
- · Replies 4 ·
Differential equations particle motion
- philnow
- · Replies 12 ·
Jump serve minimum and maximum speed to clear net and land in court
- linds1369
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Why microwave oven grids have specific hole dimensions and why only polar molecules heat
- guilesar
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How High Does a Rocket Go if It Accelerates at 79.0 m/s² for 1.90 Seconds?
- harrism1
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Force on projected object at its highest point. What is the net force?
- peterpam89
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Determining the Minimum Force to Push a Crate
- semc
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What Happens to the Speed and Proximity of Two Charged Metal Spheres in Motion?
- Digdug12
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Is negative acceleration always related to a decrease in speed?
- Loppyfoot
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Friction problem with banked curve given static friction coefficient
- zenith12
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IB Extended Essay in Physics, focusing on Fibre optics, any pointers?
- TheJoe
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Why is the scale reading 397 N when the elevator is slowing down?
- MechaMZ
- · Replies 2 ·
Finding Range of Object Shot at 40° Angle
- Want to learn
- · Replies 4 ·
A box sliding down a incline plane
- semc
- · Replies 5 ·
Calculating Time for an Object to Fall in One Dimension
- ShamTheCandle
- · Replies 4 ·
Object sliding up/down with a angular speed
- MechaMZ
- · Replies 6 ·
Finding the Magnitude of Vector Sum from Components
- Want to learn
- · Replies 7 ·
Can You Derive F = gamma^3*ma from Newton's Second Law?
- beecher
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Calculating Passenger Speed Relative to Shore: A Multi-Step Problem
- StephanieF19
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Electric Field due to two points
- Digdug12
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Newton's Laws with Friction: Two Blocks
- melv14
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What are the two angles of a successful field goal kick?
- StephanieF19
- · Replies 10 ·
Acceleration of a horizontal system with friction
- bolivartech
- · Replies 6 ·
Force on a water tank hatch 1.15m tall with 1.87m water depth
- Qbit42
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Finding the units of the gravitational constant G
- CocoonOHorror
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What is the Magnitude of the Electric Field to Just Miss the Upper Plate?
- Digdug12
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How Far Will a Race Car Travel After Running Out of Gas?
- irNewton
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Reference Frame Question: How come wind relative to boat doesn't matter?
- yougene
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Electric field 0.1mm above charged plate.
- megr_ftw
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Calculating Angular Speed for Proposed Space Station
- Fihzix
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Mass of silver to cover a 2.0 x10^2 cm2 object with .20mm thick layer
- geoti8
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Motion: Solving problems using equations
- tryintosurviv
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How Do You Calculate Net Resistance in a Circuit?
- DharmaSC815
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Arrow trajectory and swing forces using vector components
- jampop
- · Replies 1 ·
Two blocks sliding on top of each other
- pharoh123
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Work and potential energy calculations: stroller, picture frame, textbook
- Ion1776
- · Replies 9 ·
How Do You Convert dB to W/m^2 for a Test?
- tiger1
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What is the absolute uncertainty in your estimate of the total mass?
- simond
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Acceleration during collision with garbage can from 44.6 m fall
- GuitarHero
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Coulombs Law of two metal balls
- jayz618
- · Replies 24 ·
Which Variables Are Intensive and Which Are Extensive?
- kiwikahuna
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Nonuniform Circular Motion-Find time given r, a-sub-t, V-sub-0
- 6maverick6
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Simple Earth Circumference Question
- DaveMaron
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How Much Does a Baseball Drop When Thrown Horizontally at 46.8 m/s Over 15.7 m?
- triplel777
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Find Meters to Fill Copper Cylinder with 8.60lbs of Covelite
- geoti8
- · Replies 9 ·
Finding the force of a person given mass.
- mooney82
- · Replies 8 ·
Finding the Initial Pressure of A Balloon
- chunkytuna21
- · Replies 9 ·
Displacement under varying acceleration
- MechaMZ
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How Much Energy Is Required to Transport a 1kg Object from Earth to the Moon?
- Villhelm
- · Replies 14 ·
Sum of Forces in x- and y-directions
- jjli
- · Replies 1 ·
Motion in one dimension problem
- vv_ramirez259
- · Replies 1 ·
Is It Possible to Solve This Vector Problem with Given Information?
- Bymp
- · Replies 8 ·