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Evan Toh
Mar 91 min read
2023SPp1q3 What is the air resistance when the speed is doubled?
This question is challenging to students as there are many information given. But it is actually quite straight forward when you save one...
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Evan Toh
Oct 20, 20241 min read
Video 02 Finding resultant force from vector diagram provided
(1) 2003PPq1q7 (0 min to 2.42 min) Ans: Option A (2) 2023PPp1q4 (2.47 min 3.54 min) Ans: Option C (3) 2018PPp1q2 (3.45 min to 6.22 min)...
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Evan Toh
Oct 20, 20241 min read
Video 01 How to find resultant force of two or three forces (without drawing vector diagram)
Below are some examples of questions that involve finding the resultant force due to two or three forces. Below are the questions in the...
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Evan Toh
Oct 16, 20241 min read
2015 PurePhy P1Q6 – Using Newton’s 3rd Law to find Forward Thrust
Refer to this MCQ from PurePhysics 2015P1Q6 Answer: Option C
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Evan Toh
Oct 16, 20241 min read
Isn’t tyre with tread better in providing grip/traction/friction on the road in all weather?
Most of us know that when the treads of our typical car tyres are worn out, we need to change as to provide grip, hence our car will not...
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Evan Toh
Oct 16, 20241 min read
Action-Reaction: Newton’s 3rd Law
Take note how to phrase the action-reaction pair, and also the differences and similarities of a action-reaction pair.
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Evan Toh
Oct 16, 20241 min read
Direction of Frictional Force on Tyre or Wheel
For these type of questions, it is important to identify which tyre/wheel is connected/powered by the engine or the person. On each tyre...
130 views
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Evan Toh
Oct 16, 20241 min read
Understanding Newton’s 1st and 2nd Laws of Motion
1) Newton’s first law states that an object will remain at rest or in uniform motion (constant speed) in a straight line unless an...
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Evan Toh
Aug 9, 20240 min read
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Evan Toh
Jan 1, 20240 min read
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Evan Toh
Jan 1, 20241 min read
Bowling ball and feather in a vacuum room – which drops faster?
In a vacuum room, where is no air resistance, the bowling ball will have the same acceleration as the feather, which is 10 m/s2 on earth....
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Evan Toh
Dec 31, 20230 min read
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Evan Toh
Dec 31, 20231 min read
During impact of a free falling ball, the force on ground is greater than the weight of ball
In this post, it shows a free-falling ball from a height of 1.0 m. During the impact, the direction of the force on the ground is...
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Evan Toh
Dec 31, 20230 min read
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Evan Toh
Dec 31, 20231 min read
PP N2010 P1 Q4 Two objects same size and shape but one is heavier. Motion when both released
Solutions: Option C When a body is released from rest, the only force acting on the body is its weight due to gravity . Both bodies...
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Evan Toh
Dec 31, 20231 min read
Vector Diagram – Parallelogram Method
For Combined Science (Physics), drawing of vector diagram is a must.In general, two known forces are given and the resultant force of...
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