Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

Does a pushed object accelerate on a frictionless table?

  • Neek 007
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3

Escape velocity and molecular speed on the moon

  • greener1993
  • · Replies 5 ·
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5

Calculating Motion on a Ramp Without Mass

  • BraedenP
  • · Replies 2 ·
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2

Calculating the Coefficient of Friction on a 4.8m Slide Inclined at 28 Degrees

  • wondermoose
  • · Replies 2 ·
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2

Physics Problem ( Inclined plane and friction)

  • vinceed9
  • · Replies 1 ·
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1

How to calculate force and acceleration in a space shuttle launch?

  • runningirl
  • · Replies 2 ·
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2

Constant acceleration equations (SUVAT)

  • sharbie
  • · Replies 2 ·
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2

Newton's Laws and finding magnitude

  • physics_10
  • · Replies 5 ·
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5

Calculate Change in Height Using Angle and Distance Traveled

  • miodoll
  • · Replies 3 ·
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3

Angular Momentum Vector: A,C,E,G

  • Thefox14
  • · Replies 2 ·
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2

How Do You Calculate Energy Needed to Break Safety Glass?

  • dvsumosize
  • · Replies 2 ·
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2

Can Braking Distance and Reaction Time Prevent a Car Accident?

  • nasadall
  • · Replies 4 ·
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4

Force of water drops (momentum)

  • tak08810
  • · Replies 2 ·
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2

How to Solve for Force Needed to Move a Box on a Ramp with Kinetic Friction

  • Funkmaster W
  • · Replies 2 ·
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2

Sphere resting on a vertical wall

  • zorro
  • · Replies 14 ·
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14

A battery drives an electric motor which raises a 20 kg mass at a steady speed.

  • apparatus82
  • · Replies 1 ·
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1

Frequency of ultrasounds to obtain oil drops in water?

  • jonjacson
  • · Replies 2 ·
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2

Calculating Coefficient of Friction for a Pulley System

  • jrab
  • · Replies 1 ·
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1

Velocity time graph with distance and average speed

  • theguy123
  • · Replies 1 ·
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1

Circular motion with unknowns and picture

  • breck
  • · Replies 7 ·
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7

Calculating the Period of an Earth Satellite

  • Chica1975
  • · Replies 15 ·
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15

Ladder against smooth wall: 4 equations, 5 unknowns

  • Michael94
  • · Replies 6 ·
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6

Three types of non-circular orbits

  • preluderacer
  • · Replies 4 ·
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4

Magnitude of Friction Force - Circular Motion

  • Chica1975
  • · Replies 3 ·
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3

Centripetal Acceleration metres per second squared

  • Chica1975
  • · Replies 3 ·
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3

How to Calculate the Velocity of the Faster Block After Explosion?

  • huynhtn2
  • · Replies 12 ·
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12

Energy: Block sliding down frictionless ramp

  • basenne
  • · Replies 3 ·
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3

Finding magnitude and angle of vector sum and difference

  • deaninator
  • · Replies 5 ·
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5

Average acceleration of a 50 g super ball bouncing off a wall

  • Filenes
  • · Replies 3 ·
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3

What is the maximum value of the contact force during the collision?

  • huybinhs
  • · Replies 25 ·
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25

Solve Kinematic Problem: Man Shot from Cannon onto Net

  • Thekhan
  • · Replies 2 ·
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2

Why does the velocity fluctuate before gradually slowing down?

  • deaninator
  • · Replies 4 ·
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4

Kinematics - When do they meet?

  • Sean1218
  • · Replies 22 ·
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22

Finding where a 30 kg particle stops under position-dependent force

  • JennV
  • · Replies 2 ·
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2

Using onlyHow do you calculate the launch speed of an object

  • hailfire
  • · Replies 11 ·
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11

Solve Force and Impulse Homework: Speed of Tennis Ball After Collision

  • huybinhs
  • · Replies 13 ·
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13

Car is traveling at a speed, what speed will a truck have the same momentum?

  • IDKPhysics101
  • · Replies 3 ·
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3

Solve Electric Field for (x,y) Position

  • Tina20
  • · Replies 5 ·
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5

Magnitude of resultant of four vectors with given magnitudes and angles

  • laurenwings5
  • · Replies 1 ·
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1

Find the acceleration of the disk and the force of friction

  • renee1234
  • · Replies 1 ·
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1

Easy Free Body Diagram Question

  • mohabitar
  • · Replies 13 ·
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13

Avg force on car during crash test?

  • IDKPhysics101
  • · Replies 2 ·
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2

How many seconds does it take for a car to deliver 4299.1N?

  • IDKPhysics101
  • · Replies 4 ·
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4

Finding initial velocity given angle, friction, and distance

  • jhawks8
  • · Replies 12 ·
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12

How do you find the magnitude of vectors?

  • deaninator
  • · Replies 3 ·
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3

Acceleration when time is not given

  • PhysicsAdvice
  • · Replies 6 ·
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6

Conservation of Angular Momentum of uniform disk

  • ash10n
  • · Replies 1 ·
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1

Ball dropped from heigh and bounces to height, change in momentum?

  • IDKPhysics101
  • · Replies 4 ·
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4

Finding constant A from adjacent absorption spectral lines

  • semc
  • · Replies 3 ·
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3

Solve Your Spiderman Problem with Expert Tips | Easy Help Available

  • Bdurb
  • · Replies 6 ·
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6

What is the impulse and force exerted on a soccer ball when kicked?

  • huybinhs
  • · Replies 10 ·
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10

Minimum speed at the circular track

  • inky
  • · Replies 3 ·
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3
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9

How Does Gravity Affect Friction in the Sticky-Shoe Lab?

  • anna sung
  • · Replies 4 ·
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4

Elastic Collision of two objects

  • Bowenj
  • · Replies 1 ·
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1

Finding static force and kinetic force

  • tallbus1
  • · Replies 1 ·
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1
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2

Why is radiation pressure on a mirror twice what I calculated?

  • sharkybait
  • · Replies 2 ·
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2

Velocity of the car as a function of time

  • dan_and_sim
  • · Replies 1 ·
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1

Altitude of rocket with 2E5 N thrust

  • astenroo
  • · Replies 1 ·
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1

How far can one move from a sound source

  • moonman239
  • · Replies 1 ·
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1

Why does subtracting a row change the determinant?

  • fleeceman10
  • · Replies 3 ·
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3

Forces, friction and car turn radius

  • osker246
  • · Replies 5 ·
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5

Kinematics - which equation to use in kinematics problems?

  • kathyt.25
  • · Replies 14 ·
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14

How does the movement of a block affect the penetration depth of a bullet?

  • MCPO John-117
  • · Replies 9 ·
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9

Calculating Minimum Coefficient of Friction for Safe Rotor-Ride at Carnival

  • cubejunkies
  • · Replies 7 ·
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7

Calculating Mass of Light Fixture from Cable Tensions

  • tony873004
  • · Replies 9 ·
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9

Torque - Where is the normal force in this FBD?

  • Whotto
  • · Replies 10 ·
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10

How to calculate required force to exert

  • Moenieb.David
  • · Replies 7 ·
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7

How to Find the Total Distance Traveled from 0 to 10 Seconds?

  • jack911
  • · Replies 6 ·
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6

Find magnitude and direction angles of force F2 given resultant

  • physico
  • · Replies 4 ·
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4

Radius to angular velocity relationship (constant angular accel)

  • siderealtime
  • · Replies 9 ·
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9

Moment of inertia of a right triangle about one of its sides

  • fajoler
  • · Replies 5 ·
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5

Mousetrap Racer - Applied Forces

  • TheScienceKid
  • · Replies 1 ·
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1

RC Circuits and Natural Inverse Exponent function

  • noname1
  • · Replies 2 ·
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2

Mechanics - particle in a potential

  • Pagan Harpoon
  • · Replies 2 ·
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2

Bullet speed from holes in rotating disks

  • tigerseye
  • · Replies 3 ·
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3
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2

Human Cannonball Design Problem

  • JohnStaporge
  • · Replies 1 ·
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1

How to Calculate the Distance Traveled by a Bouncing Ball

  • student1ds
  • · Replies 2 ·
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2

What is the resultant of these vectors?

  • deaninator
  • · Replies 1 ·
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1

Projectile motion at an angle problem

  • Anton338
  • · Replies 1 ·
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1

Position of a point on a turning wheel..

  • imatreyu
  • · Replies 1 ·
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1

Pressure In a Horizontal Pipe -

  • needhelpfast
  • · Replies 5 ·
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5

Incline Plane Problem given mass, friction, 2 velocities

  • TehDarkArchon
  • · Replies 3 ·
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3

Calculating X componet of Velocity in collision

  • connie5828
  • · Replies 3 ·
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3

Solving for x: A Narrow Bridge Challenge

  • qswdefrg
  • · Replies 1 ·
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1

Gravitational Force Problem Solution

  • tak08810
  • · Replies 2 ·
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2

Compare the tension in the rope

  • RedDanger
  • · Replies 4 ·
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4

Simultaneous Equations From Kirchhoff's Rules

  • 00Formula00
  • · Replies 1 ·
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1

How Far Does a Spring Stretch with a 5 kg Weight?

  • JoeCho
  • · Replies 3 ·
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3

How to Find the Force of Friction on an Inclined Plane?

  • simmonj7
  • · Replies 7 ·
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7

Conservation of Energy/Gravity Problem

  • tak08810
  • · Replies 2 ·
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2

At what angle should a rock be thrown from a sloped hill for maximum range?

  • thrill3rnit3
  • · Replies 11 ·
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11
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3

Whether the boy can catch the ship? relative velocity

  • jessicaw
  • · Replies 7 ·
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7

What were the original speeds of the cars?

  • Libohove90
  • · Replies 1 ·
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1

Proton accelerated through 1000 volt capacitor

  • joshszman09
  • · Replies 1 ·
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1

Solving a Rock Falling in a Well Problem

  • mart
  • · Replies 5 ·
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5

Muzzle Speed of Gun with 24.5 km Range

  • P-Illiterate
  • · Replies 1 ·
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1