Just a quick tip! Why is a ball thrown upwards considered free falling even though our hand exerted a force upon it? When you let go of the ball, you are not exerting a force upon it anymore. The velocity of the ball would stay the same and continue to space if there were no forces acting upon it (inc gravity). The velocity of the ball changes because gravity becomes the sole force acting upon it and the ball is now free falling. The ball does not 'carry the force' or anything. The ball has a positive (non zero) velocity at first when it is moving upwards due to the force that had been on the ball but there is no force acting on the ball anymore.
Terima kasih,, pengeluar video dan guru yang mengajar... Sangat membantu.. Appreciate that,,, Kalau boleh buat video untuk semua tajuk dan semua bab..... Teruskan 🐤
Ajar la kt rumah astu upload 🥺huaa....Since this restricted movevent start we need to learn by our ownselves without having someone to explain.. Likee huh 🥴
@@ahmadrazi4747 It's actually negative. Acceleration is a vector and the +/- sign in front of the value (magnitude) serves to denote the direction of the vector. Since gravity acts downwards and downwards is universally considered a negative direction, gravitational acceleration should be negative. However in SPM, it's ok to treat it as positive as the value remains unaffected, and questions on free fall are not too complex (basic kinematics). Once you go for Pre-U qualifications such as A-Level, you're required to be more accurate with your calculations and gravitational acceleration is taken as negative.
teacher, in buku teks f4 kssm said if the ball moves upwards, g is negative while u is positive bcs g tu act downward toward the earth core right? im confuse rn as to why u use -9.81 for an object that is falling down. Its supposed to be positive la bcs acting on the original gravitation force.
Thats my matriks lecturer, one of the best lecturer 💪🏾
kalau phy saya lulus sbb vid ni saya sangat happy. sekian
Just a quick tip!
Why is a ball thrown upwards considered free falling even though our hand exerted a force upon it?
When you let go of the ball, you are not exerting a force upon it anymore. The velocity of the ball would stay the same and continue to space if there were no forces acting upon it (inc gravity). The velocity of the ball changes because gravity becomes the sole force acting upon it and the ball is now free falling. The ball does not 'carry the force' or anything. The ball has a positive (non zero) velocity at first when it is moving upwards due to the force that had been on the ball but there is no force acting on the ball anymore.
These videos are really helping me understand this chapter more :)
Cikgu yusfi ajar skolah SMK KULIM😍😍rinduuu cikgu Kat skolah...cikgu terbaikkkkkk.dowhh👍🏼👍🏼
tq sir your vid realy helping me to improve my physic
Mamang faham ....klau boleh teruskan sya berterima kasih dekat cgu👍🏻
This is damn goooood.👍👍👍
Thanks a lot for those made this cool video. I give 10/10 🌠
Terima kasih,, pengeluar video dan guru yang mengajar... Sangat membantu.. Appreciate that,,, Kalau boleh buat video untuk semua tajuk dan semua bab..... Teruskan 🐤
Cikgu terima kasih ,akhirnya Saya faham 😭😭😭
steady la sir.. patut la pi kms haritu tak nampak sir dah.
I think upward gravity is negative and downward g is positive
thanks a lot teachet👍👍
sir , if an object dropped downward , menuju ke arah g , why its negative ? saya keliru .
Rasanya ada explain kat video tu. Tgk betoi2. Vector ikut Cartesian coordinates.
Atas & kanan positif, bawah & kiri negatif
Check minit 5:50
can i have some videos fro every subtopic for physics form 4 kssm
ganesa tiagarajah sorry. Restricted movement so im restricted too. Cant do any teaching rite now. 😆
Ajar la kt rumah astu upload 🥺huaa....Since this restricted movevent start we need to learn by our ownselves without having someone to explain.. Likee huh 🥴
i need more vid teacher.... i ve read the whole text book but doesnt understand anything i need some explanation
mantulll
If need to calculate the maximum height. The g also negative? Since it is upwards why not positive
g is direction of gravity,always downwards means negative. Maximum height is the displacement of the object going up, not the g.
2.2 linear motion graph??
Isn’t gravitational acceleration is negative when falling downwards???????????
@@ahmadrazi4747 It's actually negative. Acceleration is a vector and the +/- sign in front of the value (magnitude) serves to denote the direction of the vector. Since gravity acts downwards and downwards is universally considered a negative direction, gravitational acceleration should be negative. However in SPM, it's ok to treat it as positive as the value remains unaffected, and questions on free fall are not too complex (basic kinematics). Once you go for Pre-U qualifications such as A-Level, you're required to be more accurate with your calculations and gravitational acceleration is taken as negative.
As explanied by sunny lim. Tq. Moving upwards or downwards is the object. Gravity pull always downwards. So its negative.
Noted thank you guys 👌
teacher, in buku teks f4 kssm said if the ball moves upwards, g is negative while u is positive bcs g tu act downward toward the earth core right? im confuse rn as to why u use -9.81 for an object that is falling down. Its supposed to be positive la bcs acting on the original gravitation force.
Nothing confusing. u moving upwards +. g always - bcos g cant move upwards. Gravity always dwards
Sir saja nak bagitahu, even sekarang member tanya pasal psychics saya boleh jawab lagi.
NURISMASARI BINTI ISMAIL / UPM great to hear that. Cerita rakyat igt lg?😊
@@yusfiyusop Tak pernah lupa Sir 🤣 Old good times
no matter it was upwards or downwards the g must be written as negative?
Yes. Upwards n downwards are the directions of the object thrown or release, not the gravity. Graviyu just one way, which is downwards.
@@yusfiyusop OK. Thanks a lot😊
Cikgu buat vdeo untuk chapter form 5 kssn please
#kssm
Otw. Focusing on spm 2020 now.
Pergh function
Nk video utk inertia
question.pandai.org/form4
@@adamfawwaz680 thankss 😉