Today you began a lab to design and test crash bumpers. Your goal is to design a bumper that will minimize the force during a collision. Most groups were able to gather some baseline data for force without a bumper. We will continue working on this tomorrow.
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Today we talked about how a force that acts for a time changes the momentum of an object. We also say an egg drop demo. Homework was a worksheet.
Today we introduced the concept of momentum (slides 1-6). Homework was a worksheet for practice.
Solutions for the review problems are now available.
Today you did a power lab. You should graph your data tonight so we can discuss it tomorrow.
Wednesday we will review for the quiz on Thursday. You may have one notecard (handwritten front and back) for the quiz. The solutions to the homework problems are available below. The review assignment will be posted shortly. work by a constant force KE and PE practice Conservation of Energy (roller coaster) Law of Conservation of Energy Work and Energy Problems From the lab we found that the work that we did on the cart (pulling it up the incline) equaled the cart's change in potential energy. We then discussed the general work energy equation and did some practice problems. Homework was a worksheet.
You should have gathered your data for the work on an incline lab. Make sure to convert your masses to kilograms and distance to meters before you calculate the work! When you calculate the work, you should round your answer to the same number of digits as are in the digits of your force reading, then compare how much work was done in each scenario. We will go over the data and conclusion on Monday.
Lab today - you are investigating how the angle of an incline affects the amount of work done to pull a cart up the incline. We will finish the lab tomorrow.
Today we talked about work done by a constant force. Homework is a worksheet.
Today you gathered data to answer the question "Is mechanical energy conserved for a hotwheels car on a track?". Your data and conclusion are due tomorrow.
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Reminders:
10/16/2018 - Test on one dimensional kinematics (tentative)
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October 2018
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