![]() Use mathematical representations of phenomena to describe explanations.Īlignment agreement: Thanks for your feedback! This activity focuses on the following Three Dimensional Learning aspects of NGSS: ![]() Use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system.Ĭlick to view other curriculum aligned to this Performance Expectation Learn that understanding material properties is an important aspect of engineering design.Recognize that different surfaces and materials promote different types of collisions.Understand that momentum depends on both mass and velocity. ![]() Learning how the human body and equipment interacts with the ball during impact or how the human body interacts with the inside of a car during a crash, helps engineers design better sports equipment and safer vehicles.Īfter this activity, students should be able to: And, mechanical engineers consider momentum and collisions when designing vehicles. While some engineers dedicate their research to understanding collisions between balls and bats, others study the effects of a golf ball colliding with the head of a golf club. Sports engineering is becoming a popular specialty field of study. So the SLOPE of the curve for the speed would be getting STEEPER.Copyright © 2007 Microsoft Corporation, One Microsoft Way, Redmond, WA 98052-6399 USA. ![]() The average speed gets faster in the 2nd second than in the 1st second. If you try to get your car up to 70 miles per hour when you pull off the shoulder onto I-380 after stopping because of the deer, how far will your car go in the first second? In the second second? In the 3rd second? That is easing into the motion. If you slam on your brakes in a car when you are going 75 miles per hour as you spot a deer running out on the road, and it takes you 50 yards to get stopped and 5 seconds to get stopped, where would your car be after the 1st second (of 5 seconds) of squeeling tires? It would NOT be 10 yards of the 50 yards, right? The first second your car might have gone 25 yards, or half the distance! That is easing out of the motion. The key question is how long does it take to achieve that total journey is halfway done? The keyframes are at 1 and 25 for the first two panels and are at 35 and 60 for the 3rd of the 3 panels (Custom Ease In/Ease Out panels). The RED square highlights the moment when the Ball has gone exactly 50% of the distance it needs to travel to get from one KEYFRAME to the next KEYFRAME.
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