Hello sir! I really liked your video on this topic, but I would have 1 question. Why doesn't the m*a here 5:52 have a negative sign in front of it? The acceleration vector is opposite of what we consider the positive direction.
Its my understanding that IB physics starts with many motion scenarios ignoring friction. At what point does the curriculum start to include friction in the scenarios?
hello thank you so much! i have a question in the last car example, do we usually not consider the applied force from the engine when the question states Air resistance is negligible?
You are so underrated. Your vids are much more comprehensive and concise than StudyNova and Chris Donney. Keep up the amazing work!
you are literally the only reason i pass. u make me feel like i can actually understand physics and that i'm not stupid. Thank youuuuu!!
So so wonderful to get feedback like this, thank you!
Thanks for giving us such amazing lectures.
Today as a new physics student this is video is SO USEFUL THANK YOU SIR
Mr Andy, in IB, is Newtons Second Law F net=rate of change of momentum?
Yes! Because Ft = change in momentum, if you divide both sides by time you get F = (change in momentum)/t
Hello sir! I really liked your video on this topic, but I would have 1 question. Why doesn't the m*a here 5:52 have a negative sign in front of it? The acceleration vector is opposite of what we consider the positive direction.
He did a mistake of placing a negative sign in front of frictional force .
Its my understanding that IB physics starts with many motion scenarios ignoring friction. At what point does the curriculum start to include friction in the scenarios?
you suddenly made everything so easy...
this one was a real banger
hello thank you so much! i have a question in the last car example, do we usually not consider the applied force from the engine when the question states Air resistance is negligible?
I thought the same thing 😅, but I think since it was originally traveling at 30 m/s (a constant velocity) then the net force = 0?
Thank you dayum