Question

In the 2004 Summer Olympics, Marie-Hélène Premont of Chateau-Richer, Quebec, won the silver medal in the women’s mountain bike race. She completed the 31.3 km course in 1 h 57 min 50 s.

a) 24.93 km/h; b) 2 h 23 min 23 s
b) 16.85 km/h; b) 2 h 59 min 52 s
c) 26.62 km/h; b) 1 h 41 min 40 s
d) 21.08 km/h; b) 2 h 29 min 15 s

Answer 1

The student's questions involve calculating average speed for Marie-Hélène Premont's race and Burt Munro's completion time for a motorcycle course based on provided acceleration and speed data.

Step-by-step explanation:

The question pertains to calculating average speeds and acceleration rates related to various forms of racing, including mountain biking and motorcycling. Specifically, the calculation involves determining the average speed of Marie-Hélène Premont during the 2004 Summer Olympics women's mountain bike race and calculating Burt Munro's time to complete a course based on given acceleration to maximum speed.

To solve part one, we use the formula for average speed, which is the total distance traveled divided by the total time taken. For part two, we would calculate how long it took Burt Munro to reach his maximum speed using kinematic equations and then determine the time taken to complete the entire course.