Task 2: Sally Pearson1. Explain the relationship between distance, time and speed:
Distance is how far an object travels from one point to another, Speed is the rate at which an object travels, and Time is a measure of how long it takes an object to travel from one point to another. They are related by an equation, which states that the speed of an object is equal to the it travels divided by the time it takes to travel that distance. Speed = distance time 2. Using the athlete as an example students describe their chosen athlete/ athlete’s sport in terms of speed: a) Details of the athlete's pb's speed Sally Pearson's personal best for 100m hurdles is 12.28 seconds. The speed at which she travelled in this personal best is 8.14 m/s. b) World speed records in the sport The world speed record for womens 100m hurdles is 8.197 m/s (12.20 seconds) and it is held by Kendra Harrison from USA. Following her is Yorkdanka Donkova from Bulgaria travelling at a speed of 8.190 m/s (12.21 seconds). In the third spot is Ginka Zagorcheva from Bulgaria travelling at a speed of 8.163 m/s (12.25 seconds). Fourth is Ludmila Enquist from Sweeden travelling at a speed of 8.157 m/s (12.26 seconds). The fifth world record is held by Brianna Rollins from USA at a speed of 8.157 m/s (12.26 seconds). Sixth place is where Sally Pearson sits, with a speed record of 8.143 m/s (12.28 seconds). c) How speed on the sport is measured Hurdle speed is measured by stride frequency and hurdle clearance. A hurdler's stride length must be adapted to accommodate optimal take-off distance from each hurdle. d) Factors that may contribute to or hinder the speed of an athlete in their chosen sport. - Longer strides can cause a hurdler multiple issues with rhythm and hurdling technique. - Landing off-balance. - Hitting hurdles. - Clearing hurdles too high. - Twisting the hips and shoulders. |