eureka 13 Mech advantage 

Oh my goodness. Had to comment! Woah, that was sooo good and entertaining. Wow absolutely loved it. Thrilled.

Very clear and simple😘😍😍😍😍😍😍😘😘😘😘☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺☺

I dont know what I would do without you hongjia

Yeah same thanks, I'm doing my science assignment too

that was really nice

I bet you passed that doo-doo shirt gray pants a long time ago

in very fist example prof b experience only f=3 N so MA=8

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Eureka molecules

Among us is a good game

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That guy has big nose!!!

thanks helped a lot for my science assignment

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Thanks a ton this helped me with my science project!

Thx bud! Easy to learn AND fun!

This really helped me..... Thanks!

Nice videos bro

Love it bro

hey i love your videos

I am here because of my medical school biophysics exam. lol

science book, OF SCIENCE!!!! lol

My boy hongjia

8th grade science boi

mouse trap gang

How old is this...

Hit me up in the myPark

you calculated wrong apply simple moment equations

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