5.0 X 10' m/s. In kilometers, how far is the earth from the sun? *An auto travels at a rate of 25 km/hr for 4 minutes, then at 50 km/hr for 8 minutes, and finally at 2 km/hr for 2 minutes. Find the total distance covered in km and the average speed for the complete trip in m/s. *If you traveled one mile at a speed of 100 miles per hour and another mile at a speed of 1 mile per hour, your average speed would not be (100 mph + 1 mph)/2 or 50.5 mph. What would be your average speed? (Hint: What is the total distance and total time?) *What is your average speed in each of these cases? a. You run 100 m at a speed of 5.0 m/s and then you walk 100 m at a speed of 1.0 m/s. b . You run for 100 s at a speed of 5.0 m/s and then you walk for 100 s at a speed of 1.0 m/s. * A race car driver must average 200 km/hr for four laps to qualify for a race. Because of engine trouble, the car averages only 170 km/hr over the first two laps. What average speed must be maintained for the last two laps? *A car traveling 90 km/hr is 100 m behind a truck traveling 50 km/hr. How long will it take the car to reach the truck? The peregrine falcon is the world's fastest known bird and has been clocked diving downward toward its prey at constant vertical velocity of 97.2 m/s. If the falcon dives straight down from a height of 100. m, how much time does this give a rabbit below to consider his next move as the falcon begins his descent? eling Workshop Project 2006/A-TIME for PHYSICS FIRST Unit 1 WS 8, Uniform Motion, v1.0