## StickMan Guide to Physics

StickMan Physics helps us understand the amazing world around us with animated physics lessons.  StickMan Physics is free and directed by a teacher with other physics teachers and students in mind.  Use the slider here to get to any unit.

Don't be passive when you are learning physics.  Get out paper, a pencil, and calculator and get extra practice.  Each section has example physics problems to work through with us and quizzes that provide feedback.

### How much physics do you know?

This quiz is generated from our entire StickMan Physics test bank.  Go to our practice page to get a quiz generated specific to a unit.

10 - Physics Questions

10 questions from our bank of first semester material

1 / 10

What type of collision do you have when both momentum and kinetic energy are conserved?

2 / 10

What is the efficiency of 4 meters ramp used to lift a 1400 N sled full of toys 1 meter off the ground pushing with a force of 500 N?

3 / 10

A 460 N box is hoisted above a truck by John who applies 60 N of force.  What is the actual mechanical advantage of the pulley system?

4 / 10

Simple machines can't be used to multiply _________________.

5 / 10

What does a G having a value of 6.67 x 10^-11 tell you about the force of gravity between any two object?

6 / 10

Force and acceleration are ______________ related

7 / 10

Joe has a mass of 54 kg.  What is his mass on the moon where the acceleration due to gravity is 1.62 m/s2?

8 / 10

What is the weight of a 4.0 kg object on a 25° frictionless Incline Plane? (Use g = 9.8 m/s2)

9 / 10

Pick the right equation and solve the problem:

A duck flew 500 meters in 40 seconds.  How fast was the duck flying? 10 / 10

Which variable is bold in the following question:

How fast was Sam traveling if he is traveling at 16 m/s after accelerating at 2 m/s2 for 25 meters?

A) vi

B) vf

C) a

D) t

E) x

F) v

### I'm OK at physics but need more practice

Getting extra practice helps you get an A in physics.

Click here for our physics practice page choose a unit based or overall practice quiz from our test bank.  Each quiz comes with feedback upon completion.

Go directly to a random 10 question quiz from our entire back right here.

### UNIT 1: One Dimensional Motion

This is our Introductory physics unit.  Learn the difference between scalars and vectors.  Next move on to how to pick a constant velocity or accelerated motion equation.  Afterwards this is followed by how to approach a problem when a an object is in the air or it's based on a graph.

## StickMan Physics Lessons

### UNIT 2: Two Dimensional Motion

Two dimensional motion involves vectors that include motion on the X and Y axis.  The first kind of physics problem, non-projectile, includes object that are turning but not in the air.  Because of this we will use our common SOH CAH TOA trigonometry functions.  Next we get into problems with projectiles that are being accelerated by gravity in the Y axis while having a constant X axis component.  We then teach you how to approach horizontal launch problems mathematically.

### UNIT 3: Newton's Laws and Forces

Learn Newton's three laws of motion starting with inertia, then force causes acceleration, and lastly action reaction pairs.  In this section we will look at the difference between mass and weight.  Then look at additional forces like air resistance, friction, tension, spring force and ones created on an incline plane.

### UNIT 4: Universal Gravitation and Circular Motion

Learn about Newtons Law of Universal Gravitation.  How all masses in the universe are attracted to all other masses. Then continue on to circular motion and see how centripetal force is necessary to create a circular path.  Inertia would cause an object to continue in a straight line and centripetal force creates the inward arc creating a circle.  Lastly see torque, an equivalent to a rotation acceleration created by a perpendicular force away from a rotational point.

### UNIT 5: Work, Power, Mechanical Energy, and Simple Machines

Work and power is the first section of this unit.  See how force must have a component in the direction of motion to do work or have power output.  Mechanical energy is composes of potential and kinetic energy.  See how to solve for either or the amount of one that is converted to another.  Simple machines can't be used to create energy but can be used to multiply a force at the expense of distance.  Learn more about simple machines here.

### UNIT 6: Momentum, Impulse, and Conservation of Momentum

Impulse changes momentum, or moving inertia.  This moving inertia remains conserved during collisions.  Momentum is conserved through inelastic and elastic collisions.  A ball thrown and pool balls colliding are example scenarios in this section.

### Unit 7: Electrostatics

A charged object has an electrical field around it.  There is an interaction with other charged objects within this field.  We begin this unit by looking at lightning and the difference when charging by conduction, induction, and friction.