As the reference height is at B, so above that reference height is considered positive, and below the reference height it is considered negative. Hence the height-time graph is as such. Consider a vertical oscillating object, similar to the simple pendulum, the middle is the fastest.

Answer: Option C View the video for explanation

Answer: Option A Many have the misconception that as the astronaut and camera are floating and weightless, there is no gravitational force acting on them. Actually both are inside the gravitational field of the Earth, and there is gravitational field strength, hence there is gravitational force acting on them towards the Earth. But as together with the station, they are all ‘free falling’, hence no normal contact force on the astronaut and camera, hence give the feeling of we

Refer to the video below for the explanation. Related post: Velocity-time graph of ball released from rest with air resistance - Part 1...

Refer to the video below to understand how to sketch the graph. For O-Level, we just need to focus on the general shape. 2024PP Paper 2...

Answer: Option A

Answer: Option D From the resultant force-time graph, from time to time 0 to t, there is a decreasing resultant force. Using Fnet = ma,...

Refer to the video for the explanation. When a ball is thrown up and it comes down, the motion varies. This video will cover how the...

Refer to the video below for the explanation. When a ball is dropped and it rebounces back, the motion varies. This video will cover how...

Refer to the video below for explanation. When a ball dropped and then it re-bounces, the motion varies. This video will cover how the...

Though the graph is a height-time graph, it is similar to a distance-time graph. Questions: 2017PPp1q3 and 2020PPp1q5 Answer: Option D

Instead of the usual ball release from rest, this question states that the ball has an initial velocity greater than terminal velocity in...

Instead of the usual vector diagram involving forces, these questions involve speed in a specific direction, which is velocity. Velocity ...

Answer: Option B Similar questions https://www.sgphysicstuition.com/post/video-01-how-to-find-resultant-force-of-two-or-three-forces-with...

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...

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...

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...

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...

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...

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....