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Evan Toh
Oct 241 min read
Object is released and free-falling. Time taken to fall vertically from P to Q?
Keep in mind that you can utilize the two main concepts of a speed-time graph. As object is under free-fall, the acceleration (the...
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Evan Toh
Oct 231 min read
Displacement-time and Velocity-time Graph of Ball Thrown Up / Ball Dropped
1) When a ball is thrown up and it comes down When the ball leaves the hand, there is no upward force acting on the ball. The only force...
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Evan Toh
Jan 11 min read
Kinematics graphs of ball thrown up and come down
When a ball is thrown up vertically from a height and the falls to the ground, the various kinematic graphs below shows the same motion...
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Evan Toh
Jan 11 min read
Interpreting distance-time graph and speed-time graph
Think of gradient as the steepness of a slope as you climb to the right (as time increases). 1) If it is getting steeper > increasing...
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Evan Toh
Jan 11 min read
Ticker Tape Timer
Ticker tape timer is a device which punches dots on a tape at specific time interval. The tape can be attached to a moving object. With...
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Evan Toh
Jan 11 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
Jan 11 min read
Units conversion involving prefixes
Prefixes are used to simplify the writing of very big or very small numbers. For instance, instead of having to write 12 500 000 m every...
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Evan Toh
Dec 31, 20231 min read
Distance-time and Speed-time graph of 2 objects in motion
The distance-time (displacement-time) graph on the left is not related to the speed-time (velocity-time) graph. Both are of difference...
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Evan Toh
Dec 31, 20231 min read
Kinematics Basic Concepts
01 The various physical quantities in kinematic Video tutorial 02: Acceleration Video tutorial 03: Graphical Analysis of Motion...
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Evan Toh
Dec 31, 20230 min read
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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
Understanding Free-Fall (acceleration due to gravity)
On earth, the gravitational field strength is 10 N/kg and the acceleration due to gravity is 10 ms-2 . That means when you release an...
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Evan Toh
Dec 31, 20231 min read
Gravity Flying Jet Suit
Jet Suit Flight and Talk by Richard Browning Setting Records Real Ironman Another kind of jet suit by another company
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Evan Toh
Nov 30, 20231 min read
Car A and Car B – Find the time one overtakes the other
The speed-time graph of Car A and Car B, along a straight road over 4 seconds is shown below. a) Calculate the acceleration of Car A and...
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Evan Toh
Nov 30, 20231 min read
Dynamics and kinematics: Force-time graph, find frictional force
A 10 kg box is initially at rest on a rough horizontal surface and a horizontal force is then applied to it. The force varies as shown in...
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