Speed

- Speed is the
**rate of change**in distance. It is a measure of how fast the distance change in a movement. - Speed is a scalar quantity.
- The SI unit of speed is m/s (metre per second)

Equation of Speed

Velocity

- Velocity is define as the rate of displacement change. It is the measure of how fast the displacement change of a moving object.
- Velocity is a vector quantity.
- The unit of displacemnet is m/s (metre per second)

Equation of velocity

Youtube Video 1

Positive or Negative Sign of Velocity

- In velocity, the positive/negative sign indicates direction.
- You can take any direction as positive and the opposite as negative.
- For a linear motion, normally we take the motion to the right as positive and hence the motion to the left as negative.

Youtube Video 2

External Link

Physic's Classroom - Speed and Velocity

Regentsprep - Speed and Velocity

Interactive Animation

Physic's Classroom - Speed and Velocity

Regentsprep - Speed and Velocity

Interactive Animation

NS BR// February 8, 2013 at 8:26 AMthanks a lot.. <3

NS BR// February 8, 2013 at 8:29 AMunit displacement bukan ke m..?

Irfan Ilmi// November 18, 2014 at 2:22 AMhow to download all of this?

Leslie Lim// November 19, 2014 at 12:59 AMThanks for sharing your thoughts. I truly appreciate your efforts and I am waiting for your next write ups thanks once again.

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