The equation Work due to Friction equals Change in Mechanical Energy can often be confusing for students. This video is a step-by-step introduction in how to use the formula to solve a problem.

Mr.p throws a ball toward a bucket that is 581 cm away from him horizontally. He throws the ball at an initial angle of 55° above the horizontal and the ball is 34 cm short of the bucket. If mr.p throws the ball with the same initial...

A ballistic pendulum is demonstrated and a full solution is worked out including real numbers and variable comparisons. Want Lecture Notes or Animated GIFs?ef='https://www.flippingphysics.com/ballistic-pendulum.html' target='_blank'...

Lotus gets up early to train for an upcoming marathon. Watch her tackle the infamous heartbreak hill! This lesson will derive the equations of motion for uniform acceleration using a velocity-time graph. Definitions included: derivation

In this video I show you how to set up an equation and picture from a word problem. Most of the time students have trouble with word problems because they do not know what to look for or how to solve. So I work through 28 different...

The Horizontal Range of a Projectile is defined as the horizontal displacement of a projectile when the displacement of the projectile in the y-direction is zero. This video explains how to use the equation, why a launch angle of 45°...

The video demonstrates how to use an equation for finding the initial and final velocities of an object, its acceleration, and the distance traveled during that acceleration without any reference to time. The equation is explained, and...

Given certain parameters, how would you solve the first part of this problem?<br/>
Physics Power, Part 2

Black Friday is normally celebrated with sales and shopping sprees, but this year, someone is tinkering underground. Will Mark, Georgie and Lotus discover Lexi Luthor’s lair? This lesson will introduce a simple experiment to measure the...

In the previous lesson we dropped a ball from 2.0 meters above the ground and now we throw one up to a height of 2.0 meters. We do this in order to understand the similarities between the two events. Oh, and of course we draw some...

A 55 g mass is attached to a light string, which is placed over a frictionless, massless pulley, and attached to a 199 g block which is on a board inclined at 39.3° as shown. Assuming the block starts at rest and the μk between the...

This video lecture discusses the equation v^2 - u^2 = 2as, which is used to calculate the relationship between initial and final velocity, acceleration, and distance traveled over a period of time. The video outlines a three-step process...

Given certain parameters, how would you solve this problem?<br/>
Newton's Laws Of Motion With Friction, Part 4

👉 Learn how to solve literal equations involving formulas. A literal equation is an equation where the unknown values are represented by variables. To solve a literal equation means to make one of the variables the subject of the...

Given certain parameters, how would you solve this problem?<br/>
Projectile Motion, Part 4

In This Episode, Tyler Teaches Us About How to Solve for a Variable

This video continues a problem we already solved involving dropping a ball from 2.0 meters. Now we determine how to draw the position, velocity and acceleration as functions of time graphs.

In order to use Newton’s Second Law, you need to correctly draw the Free Body Diagram. This problem explains a common mistake students make involving the force applied. We also review how to find acceleration on a velocity as a...

Lisa, are you serious? Alright, just one more favor. This one is a little trickier than the previous, because there is some trigonometry involved, beyond the kinematics and friction from the previous problems. What will become of your...

Lesson 3 (2D Motion & Kinematics) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this...

Here I prove the formulas for under damped over damped and critically damped motion of a spring mass dampener system

This is a complicated free-fall problem where you have to identify that the velocity at the top of the path is zero in the y-direciton. Furthermore, you have to look at it from the perspective of the whole event and splitting the problem...

This time in our projectile motion problem, we know the displacement in the y-direciton and we are solving for the displacement in the x-direciton. We could you use the quadratic formula and I even show you how, however, I also show you...

Apollo 15 Video Courtesy of NASA: The 1971 Feather and Hammer Drop Experiment performed by Astronaut David Scott. We analyze the experiment to determine the height from which the feather and hammer were dropped. It is a great, basic,...