Question

A typical human can develop a power of 400 W to 1000 W for short periods of time. The men's world record holder for a 200 m dash is Usain Bolt of Jamaica, who ran 19.19 s at the 2009 World Championships. If he used 950 W of power. How much energy did he convert during his sprint?​

Answer 1

Usain Bolt converted approximately 18.29 kJ of energy during his 200m sprint.

Step-by-step explanation:

To calculate the energy converted during Usain Bolt's 200m sprint, we need to use the power he used and the time it took him to complete the race. The power he used was 950 W, and the time taken was 19.19 s. The formula to calculate energy is Energy = Power × Time. Plugging in the values, we get:

Energy = 950 W × 19.19 s = 18288.5 J = 18.29 kJ (rounded to two decimal places).

Therefore, Usain Bolt converted approximately 18.29 kJ of energy during his sprint.

Answer 2

Usain Bolt converted approximately 18270.5 Joules of energy during his sprint.

Step-by-step explanation:

To calculate the energy converted by Usain Bolt during his sprint, we can use the formula:

Energy = Power × Time

Given that

• Power = 950 W
• Time = 19.19 s

Substituting these values into the formula, we get:

Energy = 950 W × 19.19 s = 18270.5 J

Therefore, Usain Bolt converted approximately 18270.5 Joules of energy during his sprint.