https://padlet.com/ong_pei_sze/gzft1w9mjttu Predict observe explain en-us 2017-08-24 23:50:06 UTC 2026-03-16 02:50:57 UTC hello@padlet.com https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182717929 (a)
P: The block is pushed at constant speed.
O: The block does not move.
E: The applied force is the same as the friction force, so the resultant force is 0N.

(b)
P: The block will accelerate.
O: The block starts moving at constant speed.
E: The applied force now overcomes the friction force, allowing it to move to the right.

(c)
P: After some time, the block will stop moving.
O: The block gradually stops moving.
E: Since friction opposes motion and there is only friction force acting on the block, the block will eventually cease motion.

]]> 2017-08-25 01:08:35 UTC https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182717929 https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182718373 (a) Prediction: The block did not move. Observation: The block did not move.
Explanation: The friction force and the applied force was the same.
(b) Prediction: The block moves towards the right. 
Observation: The blocked moved to the right.
Explanation: The resultant force was 50N as the applied force was 150N while the friction force is 100N.
(c) Prediction: The block moves a while and stops.
Observation: The block moved a while and slowed down before coming down to a shop. 
Explanation: The sum of forces and friction force was the same.]]> 2017-08-25 01:13:02 UTC https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182718373 https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182718957 Prediction: 
a) The block will start moving slowly towards the right. 
b) The block will continue moving but with a faster speed
c) The block will stop moving 
Observation: 
a) The block did not move
b) The block started moving towards the right 
c) The block will slow down to a stop. 
Explanation: 
a) the friction force and the applied force are both 100N, so the resultant force is 0N. therefore the block doesn't move
b) the applied force(150N) os greater than the friction force(94N), so the block starts moving as the resultant force is 56N
c) due to friction, the block will slow down and eventually stop moving

]]> 2017-08-25 01:18:46 UTC https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182718957 https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182719264 Prediction: 
a) ]]> 2017-08-25 01:21:16 UTC https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182719264 https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182932171 a) The block will not move.// The block did not move. As the resultant force was 0N, the forces are balanced so the block did not move.
b) The block will start moving at a constant speed.// The block moved at an increasing speed. //There is a resultant force pushing the block so the block moved at an increasing speed.
c) The block will stop.// The block slowed down and came to a stop. // The forces are cancelled so the block will slow down and come to a stop due to friction force. ]]> 2017-08-26 12:44:20 UTC https://padlet.com/ong_pei_sze/gzft1w9mjttu/wish/182932171