Average velocity and speed worked example | One-dimensional motion | AP Physics 1 | Khan Academy

Sal solves a word problem to find average velocity and speed of an object in one-dimension.

AP Physics 1 on Khan Academy: Meet one of our writers for AP¨_ Physics, Sean. A physics teacher for seven years, Sean has taught AP¨_ Physics 1, AP¨_ Physics C, and Conceptual Physics. HeÕs also a former mechanical engineer. Sean is based in Boise, Idaho, and is a Khan Academy physics fellow, creating awesome new exercises and articles for AP¨_ Physics.

Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today!

[YourLocalPigeon]

Who's here at 2024, still not understanding an adverb?

[vctor]

Students should also know they are two confusing formula for Av. Velocity
Av=displacement/time
Av=(intial Velocity+finally velocity)/2

[kennethjayunabia]

The pig's initial position has to be at x=0 and final position at x=-10. That's why delta x = -10.

[arashdelkhoonjoband]

but doesn't the pig starts from 0? I assume X initial would be zero because it starts from rest and then runs 20 m rightward.

[thejopeaterpals]

hello this math problem is amazing you are really helping people

[AcsahMengistu]

I have a question when we approximate -1m/30s into 0.03 where did we drop negative sign

[thanaa]

I dunno bro i think 1/6 m/s
is too little to say it runs

[BlackMamba]

With due respect I believe the formula for Average Velocity is Displacement/Time Elapsed. We need to find the pig's displacement before we find its velocity. Formula for Displacement is (final displacement)-(initial displacement). Since we have three Displacements, the Displacement should be -25-(-5)-20 = -40m.

[NtlakuBaloyi]

Question...we are given the average speed and you use it as the average velocity, why?

[jeevanshaji]

why should the apple be juicy why a pig