Laws of Motion Unit Part 3: Forces in Motion

Part 3 is about Forces in Motion and contains 7 Lessons and 18 Page Work Bundle. Part 2 of the Unit begins describing the first Law of Thermodynamics with a series of unfolding animations. Potential Energy is described and a series of visuals shown. Students are shown an animation of a monkey falling from a tree and catching a banana shot from a cannon. They need to write a sentence that describes potential energy from the animation. They also see another animation of a pole vaulter and describe some potential and are introduced to kinetic energy. The PowerPoint then describes PE=mgh in a step by step process. A series of step by step word problems have students determine Potential Energy. Answers are provides as well as the step by step process of solving the problem. Kinetic Energy is then covered in a similar fashion. Special attention is payed to the order of operations when finding KE= 1/2 M * V2. A really neat bungee jumping egg activity is described with a step by step procedure. The activity uses plastic Easter Eggs, elastic bands, washers (coins work), and string. Students calculate the PE of the egg, height, drop, etc. to determine the correct length of string needed to drop the egg with bungee to prevent the egg from crashing apart on the floor but still getting within a few inches. Another activity that I use with F=MA but pertains to Potential and Kinetic Energy involving different size batteries, heights of ramps, and objects getting hit, is included. Many word problems, and slides are also dedicated to F=MA as well as some neat video links that done by NASA / ESA on the ISS. This is really neat PowerPoint that includes many hands-on activities. It is challenging but not overwhelming. The activities are spread throughout which makes each day interesting. This PowerPoint begins describing centripetal force. A dummy water demonstration follows which has the teacher spin a glass of water upside down using a well balanced tray and some string. A link to a video on YouTube shows some teenagers setting up a motorcycle to spin a merry go round - Needless to say it ends in disaster with a person going flying out in a straight line but is okay. Questions Follow. Speed is presented D/T in a series of slides and word problems with images and the answers follow. The answers are revealed in a step by step process. Velocity is described and a series of word problems follow trying to trick the students between speed vs. velocity. Word problems also work backwards, giving students the time traveled and they determine the distance traveled. Explanations are provided. Acceleration is then covered in a series of slides. A neat animation uncovers a road race one step at a time and students try and predict the winner. They always choose the car that accelerates the fastest which turns out to lose. The winning car gradually builds up speed after a slower start. Deceleration is described and word problems follow. Momentum follows in similar fashion and followed by some word problems with answers. The equation and definition of work is described. Bob the Builder makes a few appearances to make it interesting. A really neat activity concludes this PowerPoint that has students set up a giant "Hot Wheels" track in the room and determine all of the above. Materials -Track needed, a car, stopwatch, meter stick. A quiz follows the activity with similar data, the answers are revealed one at a time. The quiz mimics the activity so the students get to do it together before they are asked to do the calculations on their own. Everything you need to run a fantastic unit of study is provided.

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