1723A, 23C & 31A: What do we know about Newton's 3 Laws of motions? by CheeSeng Lim https://padlet.com/lim_chee_seng2/7as9pt1oxded You should add a comment for each column under "What we know", "Want to know" and "What we learned". You may also include your comments or likes for your friends. Remember to respect your friends and yourself when commenting. (KWL Chart) en-us 2018-06-18 04:36:48 UTC 2025-09-28 01:03:05 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/91810442/4eab4ab0d7f4cb776574703dd4e24fd6/giraffe_icon.svg For example: Action and reaction pairs of forces have the following characteristics; 1. equal magnitude, 2. opposite direction, 3. same type, 4. act on different body, 5. happen over the same duration. lim_chee_seng2 https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/267559714 2018-06-18 04:36:48 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/267559714 For example: Can Newton's 3 laws explain why objects move in a circle? lim_chee_seng2 https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/267559715 2018-06-18 04:36:48 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/267559715 For example: Newton's first law is about inertia. lim_chee_seng2 https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/267559716 2018-06-18 04:36:48 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/267559716 Impulse of a force acting for a given time interval is equal to the change of momentum produced over that interval yeo_juin_kee_max https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269321900 2018-07-04 01:15:52 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269321900 NA yeo_juin_kee_max https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269322128 2018-07-04 01:18:49 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269322128 Different types of elasticity: 1) Elastic collision-total momentum and total kinetic energy of colliding object conserved.2)Inelastic collision- total momentum conserved but total kinetic energy is not conserved.3)Perfectly inelastic collision- 2 objects collide, stick together and move on together with the same velocity after the collision yeo_juin_kee_max https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269322263 2018-07-04 01:19:58 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269322263 Newton's 3rd Law of Motion akdbz006 https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325175 It states that if an object A exerts a force on object B, object B would exert an equal but opposite force on object A.]]> 2018-07-04 01:54:08 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325175 Forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself. tan_jing_fong_shannon https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325342 2018-07-04 01:56:29 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325342 Newton's 2nd law of motion lee_rui_quan https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325669 Net force is equal to mass times acceleration.  Fnet = Ma

]]> 2018-07-04 01:59:56 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325669 Hooke's Law ANG_YING_XUAN https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325859 Magnitude of Force by the spring is proportional to the extension of the sping. 
Hence, F=kx]]> 2018-07-04 02:02:13 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269325859 If the forces are equal and opposite, shouldn't all the forces in the universe cancels? tan_jing_fong_shannon https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269326255 2018-07-04 02:07:37 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269326255 Couple ANG_YING_XUAN https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269326470 Forces have to be of same magnitude, opposite in direction and causes a rotation. ]]> 2018-07-04 02:10:44 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269326470 Newton's third law gina_tee_yi_jin https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327541 FAB = -FBA
when body a exert force on body b, body b will exert an equal but opposite force on body a.

]]> 2018-07-04 02:24:26 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327541 Newton's lim_yuet_min_janice https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327905 2018-07-04 02:27:33 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327905 Newton lim_yuet_min_janice https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327906 2018-07-04 02:27:33 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327906 Newton's third law lim_yuet_min_janice https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327907 2018-07-04 02:27:33 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327907 Newton's third law lim_yuet_min_janice https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327945 When object A exerts a force on object B, object B will exert an equal but opposite force on object A.]]> 2018-07-04 02:27:47 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327945 gina_tee_yi_jin https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327965  Unless a force is applied to a stationary particle, it doesn’t start moving ]]> 2018-07-04 02:28:00 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269327965 Newton's First Law tan_shu_ying https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269329914 Inertia is proportional to mass. The greater the mass, the greater the reluctance of a body to change its motion.]]> 2018-07-04 02:48:08 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269329914 Newton's First Law https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269330121 A body will continue in its state of motion or rest unless external force is applied.]]> 2018-07-04 02:51:09 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269330121 Regarding N2L https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269330358 is there any possible case where both mass and velocity change. if so, does it follow N2L or are we making assumption that it does follow N2L]]> 2018-07-04 02:53:40 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269330358 Newton's 3rd law lee_rui_quan https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269330674 Two forces always act on different bodies, hence they cannot cancel out each other]]> 2018-07-04 02:57:44 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269330674 akdbz006 https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269332907 Forces always act as a pair]]> 2018-07-04 03:18:36 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269332907 https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269333593 Action Reaction pair do not cancel out each other as it act on different body]]> 2018-07-04 03:25:51 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269333593 forces lim_yuet_min_janice https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269333676 forces act in a pair]]> 2018-07-04 03:27:07 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269333676 tan_shu_ying https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269336084 We have to consider Newton's Third Law of motion in questions regarding action and reaction pairs of forces ]]> 2018-07-04 03:51:43 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269336084 Law of inertia lau_ker_ying https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269340247 An object stays in state of rest or motion unless a net external force is applied]]> 2018-07-04 04:34:51 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269340247 lau_ker_ying https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269340585 For every action, there's an equal but opposite reaction (normal force).]]> 2018-07-04 04:41:36 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269340585 newton's 1st, 2nd and 3rd law humairah_hafiz_png https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269378568 2018-07-04 12:58:59 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269378568 humairah_hafiz_png https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269379348 f=ma
f△t=m△v]]> 2018-07-04 13:08:28 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269379348 Newton's 2nd Law of Motion yang_peishi https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269379522 N2L explores linear momentum of an object quantitatively when there is a resultant force acting on it.
Linear momentum is the product of the object's mass and it's linear velocity.]]> 2018-07-04 13:10:38 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269379522 yang_peishi https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269379728 Area under force-time graph is the change in momentum 
True weightlessness occurs when there is no gravitational field ]]> 2018-07-04 13:13:22 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269379728 Action reaction pair is are same in magnitude and act in opposite direction. https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479143 2018-07-05 14:01:06 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479143 Regarding Action-reaction pair, if they are equal in magnitude and act in opposite direction, why do they not cancel out/ https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479218 2018-07-05 14:02:02 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479218 If action reaction pair are equal in magnitude and act in opposite direction, why do they not cancel out? https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479395 2018-07-05 14:03:53 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479395 Action reaction pair act on different bodies and that is why they do not cancel out https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479465 2018-07-05 14:04:41 UTC https://padlet.com/lim_chee_seng2/7as9pt1oxded/wish/269479465