A 28.8 g yellow air hockey disc elastically strikes a 26.9 g stationary red air hockey disc. If the velocity of the yellow disc before the collision is 33.6 i cm/s and after the collision it is [4.79 i - 9.57 j] cm/s, what is the...

A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of...

In this introductory free-fall acceleration problem we analyze a video of a medicine ball being dropped to determine the final velocity and the time in free-fall. Included are three common mistakes students make. "Why include...

Learn how to use the Conservation of Mechanical Energy equation by solving a trebuchet problem.

This video explains the basics of one-dimensional motion, including distance, displacement, speed, and velocity. It also introduces the concept of acceleration and provides equations to calculate these values. These concepts are...

Conservation of Momentum example 1

I derive the formula for Kinetic Energy and show that the total work done by all the forces acting on an object = 0.5 m (V2^2 - V1^2)

A 73 kg mr.p steps off a 73.2 cm high wall. If mr.p bends his knees such that he stops his downward motion and the time during the collision is 0.28 seconds, what is the force of impact caused by the ground on mr.p?

In this lesson we continue to use what we have learned about solving Uniformly Accelerated Motion (UAM) problems. This problem is more complicated because it involves two, interconnected parts.

This video covers conservation of momentum in both normal and tangential directions when two spheres collide. It's important to note that conservation of momentum in the tangential direction holds for each ball since the force acting on...

Billy helps you review Conservation of Mechanical Energy, springs, inclines, and uniformly accelerated motion all in one example problem.

Now that we have learned about conservation of momentum, let’s apply what we have learned to an “explosion”. Okay, it’s really just the nerd-a-pult launching a ball while on momentum carts.

An advanced free-fall acceleration problem involving 2 parts and 2 objects. Problem: You are wearing your rocket pack (total mass = 75 kg) that accelerates you upward at a constant 10.5 m/s^2. While preparing to take pictures of the...

In this video, you will learn how to rearrange formulas to highlight specific relationships by using the properties of equality. The teacher explains how to solve for mass when force and acceleration are known, and also demonstrates how...

With the assistance of an animation, this video shows how to calculate impulse using the change in momentum.

How is work and kinetic energy similar? What is the big picture after watching this video?<br/>
Kinetic Energy And The Work - Energy Theorem, Part 2

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

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

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...

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...

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 a universe devoid of anything else, two identical spheres of mass, m, and radius, R, are released from rest when they have a distance between their centers of mass of X. Find the magnitude of the impulse delivered to each sphere until...