Displacement-time and Velocity-time graph when ball is dropped and it rebounces (no energy lost) - Part 01

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 various graphs are sketched and why. In this ideal situation, you ignore air resistance and assume no energy converted to other forms as the ball hits the floor.

View the two related videos below

https://youtu.be/clD1b1i7yX0

https://youtu.be/en2RM_Z14AU

https://youtu.be/JuK9pHHa-kk

Light Reflection Experiment - Mirror and Pins - Determine the object distance and image distance.

Characteristics of mirror image:

• virtual (an image which cannot be formed on a screen)

• same size as object

• laterally inverted

• upright

• distance between object and mirror is equal to distance between image and mirror

One difficulty faced by students in such experiment is how to insert the pins with respect to the image of the object. So do watch the video to learn the techniques, which is applicable for refraction too.

Reflection Ray Diagram - Some examples

Examples of reflection ray diagrams covered in the video.