9. Calculate the average speed (in km/h) of a car stuck in traffic that drives 12 kilometers in 2 hours. 10. How long would it take you to swim across a lake that is 900 meters across if you swim at 1.5 m/s? a. What is the answer in seconds? 600 600s b. What is the answer in minutes? 10minutes 1 1. How far will you travel if you run for 10 minutes at 2 m/s? 1200 m/s 60 0 . 2 12. You have trained all year for a marathon. In your first attempt to run a marathon, you decide that you want G to complete this 26-mile race in 4.5 hours. a. What is the length of a marathon in kilometers (1 mile = 1.6 kilometers)? B b. What would your average speed have to be to complete the race in 4.5 hours? Give your answer in kilometers per hour. 13. Suppose you are walking home after school. The distance from school to your home is five kilometers. On foot, you can get home in 25 minutes. However, if you rode a bicycle, you could get home in 10 minutes. a. What is your average speed while walking? b. What is your average speed while bicycling? c. How much faster you travel on your bicycle? 14. Suppose you ride your bicycle to the library traveling at 0.5 km/min. It takes you 25 minutes to get to the library. How far did you travel? does this take? 15. You ride your bike for a distance of 30 km. You travel at a speed of 0.75 km/ minute. How many minutes 16. A train travels 225 kilometers in 2.5 hours. What is the train's average speed? 17. An airplane travels 3,260 kilometers in 4 hours. What is the airplane's average speed? 18 A person in a kayak paddles down river at an average speed of 10 km/h. After 3.25 hours, how far has she traveled? 19. The same person in question 18 paddles upstream at an average speed of 4 km/h. How long would it take her to get back to her starting point? 20. An airplane travels from St. Louis, Missouri to Portland, Oregon in 4.33 hours. If the distance traveled is 2,742 kilometers, what is the airplane's average speed? 1 Smis 21. The airplane returns to St. Louis by the same route. Because the prevailing winds push the airplane along, the return trip takes only 3.75 hours. What is the average speed for this trip? 22. The airplane refuels in St. Louis and continues on to Boston. It travels at an average speed of 610 km/h. If the trip takes 2.75 hours, what is the flight distance between St. Louis and Boston? 23. The speed of light is about 3.00 x 105 km/s. It takes approximately 1.28 seconds for light reflected from the moon to reach Earth. What is the average distance from Earth to the moon? 24. The average distance from the sun to Pluto is approximately 6.10 x 109 km. How long does it take light from the sun to reach Pluto? Use the speed of light from the previous question to help you. VAJ COSSD VO ON BATTING 100% POLYESTER FIBER JO ONUSISNOO ALL NEW MATER EXCEPT BY THED TAG NOT