Motion
Speed//acceleration//velocity
Speed is how fast an object is moving. Speed is an important factor in track, especially for sprinters.
The speed of a runner is determined by the distance traveled with each stride (stride length) and the number of strides taken in a given amount of time (stride frequency, sometimes also called cadence). Stride length times stride frequency equals speed. For instance, five ft (1.5 m) per stride times three strides per second equals a speed of 15 ft (4.5 m) per second.
Acceleration is an increase in the rate or speed of an object or person. Athletes in track use acceleration in running events.
Here is a short video showing acceleration in track:
The speed of a runner is determined by the distance traveled with each stride (stride length) and the number of strides taken in a given amount of time (stride frequency, sometimes also called cadence). Stride length times stride frequency equals speed. For instance, five ft (1.5 m) per stride times three strides per second equals a speed of 15 ft (4.5 m) per second.
Acceleration is an increase in the rate or speed of an object or person. Athletes in track use acceleration in running events.
Here is a short video showing acceleration in track:
For example, if a runner was racing a 100 meter race and he finished it in 10 seconds, then his acceleration would look like this graph:
Velocity is the rate of change of displacement with respect to time. Although you don't hear about it very often, velocity is commonly used in track. For example, if you calculated the velocity of a runner that ran 1 full lap (400m) around the track in 1 minute, his velocity would be 1m/s. You can calculate the velocity by using the equation velocity= miles/hours (distance/time).