Problem Set 1.1
Follow the Problem Set Instructions & Rubric to complete and submit the following questions:
1. Assume that the backwards running marathon record is 3 h 53 min 17 s. Determine the average speed of this 42.2 km race. Express your answer in both metres per second (m/s) and kilometres per hour (km/h).
2. Electrons in a television tube travel 38 cm from their source to the screen in \(1.9 \times 10^{-7} s\). Calculate the average speed of the electrons in metres per second (m/s).
3. Write an equation for each of the following:
a) total distance in terms of average speed and total time
b) total time in terms of average speed and total distance
4. Copy Table 1 below into your notebook and calulate the unknown values.
5. In the human body, blood travels faster in the aorta, the largest blood vessel, than in any other blood vessel. Given an average sped of 28 cm/s, how far does blood travel in the aorta in 0.20s?
6. A supersonic jet travels once around Earth at an average speed of \(1.6 \times 10^3 km/h\). The average radius of its orbit is \(6.5 \times 10^3 km\). How many hours does the trip take?
ANSWERS
1. 3.01 m/s; 10.9 km/h
2. \(2.0 \times 10^6 m/s\)
4. \(4.0 \times 10^7s\); \(1.2\times10^3m\); 75 s
5. 5.6 cm
6. 26 h