Impulse | Physics | Chegg Tutors

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• published: 13 Apr 2016
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A moving particle has momentum and kinetic energy, but it does not carry with it a force, contrary to what many people imagine. The force required to cause a particle to stop (that is, to reduce its momentum to zero) depends on how big the momentum change is and on how quickly the momentum change occurs. A long collision time results in a smaller force, and a short collision time results in a larger force. If your head hits the hard surface of a car dashboard and stops quickly, a large (and possibly fatal) force will be applied to your head. If your head hits a cushioning air bag and stops slowly, the force will be greatly reduced. There are many examples of the consequences of this. When a parachutist lands, he bends his knees to lengthen the collision time with the Earth, thereby reducing the force he experiences. A boxer rolls with the punch to minimize its effect. When you catch a hardball barehanded, you draw your hand back to reduce the sting. ---------- Physics tutoring on Chegg Tutors Learn about Physics terms like Impulse on Chegg Tutors. Work with live, online Physics tutors like Jonathan G. who can help you at any moment, whether at 2pm or 2am. Liked the video tutorial? Schedule lessons on-demand or schedule weekly tutoring in advance with tutors like Jonathan G. Visit https://www.chegg.com/tutors/Physics-online-tutoring/?utm_source=youtube&utm;_medium=video&utm;_content=managed&utm;_campaign=videotutorials ---------- About Jonathan G., Physics tutor on Chegg Tutors: University of Pennsylvania, Class of 2014 Pre-Med/Biology major Subjects tutored: SAT II Physics, Trigonometry, MCAT, Study Skills, SAT II Biology E/M, ACT (science), Pre-Calculus, SAT II Chemistry, Biochemistry, Basic Science, Geometry, Medicine, Astronomy, Algebra, Astrophysics, Resume Writing, Pre-Algebra, Environmental Science, Biology, Basic Math, College Admissions, Physics, and Chemistry TEACHING EXPERIENCE I have been tutoring since 11th grade in high school in the sciences and math. Throughout college at the University of Pennsylvania, I tutored many students in Physics (General Physics Semesters 1 & 2), General Biology, Molecular Biology, Genetics, Biochemistry, Cellular Biology, Cancer Biology, Physiology, General Chemistry (1 & 2), and Organic Chemistry (1 & 2). I have an extremely strong background in the biological sciences, physical sciences, and math. I currently tutor at the high school and college level. Over the years I have gained experience in adapting to the learning habits of many students. Each student is different and therefore requires a different way of approaching the material. I love helping each student relate to and enjoy even the most difficult subjects in order to make the material easily understood. EXTRACURRICULAR INTERESTS I love to relax and enjoy good company. I have a dog whom I love very much. I am a huge soccer fan and play regularly on the weekends. I have been playing the guitar for 15 years. I jog almost every morning. I consider myself to be pretty easy-going. I enjoy watching movies and TV shows. Some of my favorite TV shows are Modern Family, Parks and Rec, The Big Bang Theory, The Office, It's Always Sunny in Philadelphia, Game of Thrones, Sherlock BBC, and The Flash. Want to book a private lesson with Jonathan G.? Message Jonathan G. at https://www.chegg.com/tutors/online-tutors/Jonathan-G-162548/?utm_source=youtube&utm;_medium=video&utm;_content=managed&utm;_campaign=videotutorials ---------- Like what you see? Subscribe to Chegg's Youtube Channel: http://bit.ly/1PwMn3k ---------- Visit Chegg.com for purchasing or renting textbooks, getting homework help, finding an online tutor, applying for scholarships and internships, discovering colleges, and more! https://chegg.com ---------- Want more from Chegg? Follow Chegg on social media: http://instagram.com/chegg http://facebook.com/chegg http://twitter.com/chegg