Types of Speed
There are four different forms of speed.
- A moving object is considered to be moving at a consistent speed when it travels the same distance in the same amount of time.
- When an object travels a different distance at regular intervals, it is said to be moving at a variable pace.
- Average speed is the average speed determined by the ratio of the total distance travelled by an object to the entire amount of time it took to travel that distance.
- Instantaneous speed: The speed of an object at any given moment when it is travelling at a variable speed is referred to as the object's instantaneous speed.
Which of the following is CORRECT for the speed ratio of a gear train? (a)Speed of driver/speed of driven (b)Speed of driven/speed of driver (c)Number of teeth on driver/number of teeth on driven (d)None of these
The correct speed ratio for a gear train is the speed of the driver/speed of the driven. Speed is the distance which is travelled by an object based on time. The unit of speed is m/s and can be found using the formula s = d/t.